Why do I get this error dovecot auth passwd-file unknown user SHA1 of given password

[unlucio]

This error really needs an answer or a better log line..

Starting with brand new install, following the manual.

ENV

ENV file (click to view)

# -----------------------------------------------
# --- Mailserver Environment Variables ----------
# -----------------------------------------------

# DOCUMENTATION FOR THESE VARIABLES IS FOUND UNDER
# https://docker-mailserver.github.io/docker-mailserver/latest/config/environment/

# -----------------------------------------------
# --- General Section ---------------------------
# -----------------------------------------------

# empty => uses the `hostname` command to get the mail server's canonical hostname
# => Specify a fully-qualified domainname to serve mail for.  This is used for many of the config features so if you can't set your hostname (e.g. you're in a container platform that doesn't let you) specify it in this environment variable.
OVERRIDE_HOSTNAME=mail.mydomain.com

# REMOVED in version v11.0.0! Use LOG_LEVEL instead.
DMS_DEBUG=0

# Set the log level for DMS.
# This is mostly relevant for container startup scripts and change detection event feedback.
#
# Valid values (in order of increasing verbosity) are: `error`, `warn`, `info`, `debug` and `trace`.
# The default log level is `info`.
LOG_LEVEL=info

# critical => Only show critical messages
# error => Only show erroneous output
# **warn** => Show warnings
# info => Normal informational output
# debug => Also show debug messages
SUPERVISOR_LOGLEVEL=info

# Support for deployment where these defaults are not compatible (eg: some NAS appliances):
# /var/mail vmail User ID (default: 5000)
DMS_VMAIL_UID=0
# /var/mail vmail Group ID (default: 5000)
DMS_VMAIL_GID=0

# **empty** => use FILE
# LDAP => use LDAP authentication
# OIDC => use OIDC authentication (not yet implemented)
# FILE => use local files (this is used as the default)
ACCOUNT_PROVISIONER=FILE

# empty => postmaster@domain.com
# => Specify the postmaster address
POSTMASTER_ADDRESS=postmaster@mydomain.com

# Check for updates on container start and then once a day
# If an update is available, a mail is sent to POSTMASTER_ADDRESS
# 0 => Update check disabled
# 1 => Update check enabled
ENABLE_UPDATE_CHECK=1

# Customize the update check interval.
# Number + Suffix. Suffix must be 's' for seconds, 'm' for minutes, 'h' for hours or 'd' for days.
UPDATE_CHECK_INTERVAL=1d

# Set different options for mynetworks option (can be overwrite in postfix-main.cf)
# **WARNING**: Adding the docker network's gateway to the list of trusted hosts, e.g. using the `network` or
# `connected-networks` option, can create an open relay
# https://github.com/docker-mailserver/docker-mailserver/issues/1405#issuecomment-590106498
# The same can happen for rootless podman. To prevent this, set the value to "none" or configure slirp4netns
# https://github.com/docker-mailserver/docker-mailserver/issues/2377
#
# none => Explicitly force authentication
# container => Container IP address only
# host => Add docker container network (ipv4 only)
# network => Add all docker container networks (ipv4 only)
# connected-networks => Add all connected docker networks (ipv4 only)
PERMIT_DOCKER=none

# Set the timezone. If this variable is unset, the container runtime will try to detect the time using
# `/etc/localtime`, which you can alternatively mount into the container. The value of this variable
# must follow the pattern `AREA/ZONE`, i.e. of you want to use Germany's time zone, use `Europe/Berlin`.
# You can lookup all available timezones here: https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List
TZ=Europe/Rome

# In case you network interface differs from 'eth0', e.g. when you are using HostNetworking in Kubernetes,
# you can set NETWORK_INTERFACE to whatever interface you want. This interface will then be used.
#  - **empty** => eth0
NETWORK_INTERFACE=

# empty => modern
# modern => Enables TLSv1.2 and modern ciphers only. (default)
# intermediate => Enables TLSv1, TLSv1.1 and TLSv1.2 and broad compatibility ciphers.
TLS_LEVEL=

# Configures the handling of creating mails with forged sender addresses.
#
# **0** => (not recommended) Mail address spoofing allowed. Any logged in user may create email messages with a forged sender address (see also https://en.wikipedia.org/wiki/Email_spoofing).
# 1 => Mail spoofing denied. Each user may only send with his own or his alias addresses. Addresses with extension delimiters(http://www.postfix.org/postconf.5.html#recipient_delimiter) are not able to send messages.
SPOOF_PROTECTION=1

# Enables the Sender Rewriting Scheme. SRS is needed if your mail server acts as forwarder. See [postsrsd](https://github.com/roehling/postsrsd/blob/master/README.md#sender-rewriting-scheme-crash-course) for further explanation.
#  - **0** => Disabled
#  - 1 => Enabled
ENABLE_SRS=0

# Enables the OpenDKIM service.
# **1** => Enabled
#   0   => Disabled
ENABLE_OPENDKIM=0

# Enables the OpenDMARC service.
# **1** => Enabled
#   0   => Disabled
ENABLE_OPENDMARC=0


# Enabled `policyd-spf` in Postfix's configuration. You will likely want to set this
# to `0` in case you're using Rspamd (`ENABLE_RSPAMD=1`).
#
# - 0     => Disabled
# - **1** => Enabled
ENABLE_POLICYD_SPF=0

# Enables POP3 service
# - **0** => Disabled
# - 1     => Enabled
ENABLE_POP3=0

# Enables IMAP service
# - 0     => Disabled
# - **1** => Enabled
ENABLE_IMAP=1

# Enables ClamAV, and anti-virus scanner.
#   1   => Enabled
# **0** => Disabled
ENABLE_CLAMAV=1

# Add the value as a prefix to the mail subject when spam is detected.
# NOTE: By default spam is delivered to a junk folder, reducing the value of a subject prefix for spam.
# NOTE: When not using Docker Compose, other CRI may not support quote-wrapping the value here to preserve any trailing white-space.
SPAM_SUBJECT=***SPAM***

# Enables Rspamd
# **0** => Disabled
#   1   => Enabled
ENABLE_RSPAMD=1

# When `ENABLE_RSPAMD=1`, an internal Redis instance is enabled implicitly.
# This setting provides an opt-out to allow using an external instance instead.
# 0 => Disabled
# 1 => Enabled
ENABLE_RSPAMD_REDIS=0

# When enabled,
#
# 1. the "[autolearning][rspamd-autolearn]" feature is turned on;
# 2. the Bayes classifier will be trained when moving mails from or to the Junk folder (with the help of Sieve scripts).
#
# **0** => disabled
# 1     => enabled
RSPAMD_LEARN=1

# This settings controls whether checks should be performed on emails coming
# from authenticated users (i.e. most likely outgoing emails). The default value
# is `0` in order to align better with SpamAssassin. We recommend reading
# through https://rspamd.com/doc/tutorials/scanning_outbound.html though to
# decide for yourself whether you need and want this feature.
#
# Note that DKIM signing of e-mails will still happen.
RSPAMD_CHECK_AUTHENTICATED=0

# Controls whether the Rspamd Greylisting module is enabled.
# This module can further assist in avoiding spam emails by greylisting
# e-mails with a certain spam score.
#
# **0** => disabled
# 1     => enabled
RSPAMD_GREYLISTING=1

# Can be used to enable or disable the Hfilter group module.
#
# - 0     => Disabled
# - **1** => Enabled
RSPAMD_HFILTER=1

# Can be used to control the score when the HFILTER_HOSTNAME_UNKNOWN symbol applies. A higher score is more punishing. Setting it to 15 is equivalent to rejecting the email when the check fails.
#
# Default: 6
RSPAMD_HFILTER_HOSTNAME_UNKNOWN_SCORE=6

# Can be used to enable or disable the (still experimental) neural module.
#
# - **0** => Disabled
# - 1     => Enabled
RSPAMD_NEURAL=0

# Amavis content filter (used for ClamAV & SpamAssassin)
# 0 => Disabled
# 1 => Enabled
ENABLE_AMAVIS=0

# -1/-2/-3 => Only show errors
# **0**    => Show warnings
# 1/2      => Show default informational output
# 3/4/5    => log debug information (very verbose)
AMAVIS_LOGLEVEL=0

# This enables DNS block lists in Postscreen.
# Note: Emails will be rejected, if they don't pass the block list checks!
# **0** => DNS block lists are disabled
# 1     => DNS block lists are enabled
ENABLE_DNSBL=0

# If you enable Fail2Ban, don't forget to add the following lines to your `compose.yaml`:
#    cap_add:
#      - NET_ADMIN
# Otherwise, `nftables` won't be able to ban IPs.
ENABLE_FAIL2BAN=0

# Fail2Ban blocktype
# drop   => drop packet (send NO reply)
# reject => reject packet (send ICMP unreachable)
FAIL2BAN_BLOCKTYPE=drop

# 1 => Enables Managesieve on port 4190
# empty => disables Managesieve
ENABLE_MANAGESIEVE=1

# **enforce** => Allow other tests to complete. Reject attempts to deliver mail with a 550 SMTP reply, and log the helo/sender/recipient information. Repeat this test the next time the client connects.
# drop => Drop the connection immediately with a 521 SMTP reply. Repeat this test the next time the client connects.
# ignore => Ignore the failure of this test. Allow other tests to complete. Repeat this test the next time the client connects. This option is useful for testing and collecting statistics without blocking mail.
POSTSCREEN_ACTION=enforce

# empty => all daemons start
# 1 => only launch postfix smtp
SMTP_ONLY=

# Please read [the SSL page in the documentation](https://docker-mailserver.github.io/docker-mailserver/latest/config/security/ssl) for more information.
#
# empty => SSL disabled
# letsencrypt => Enables Let's Encrypt certificates
# custom => Enables custom certificates
# manual => Let's you manually specify locations of your SSL certificates for non-standard cases
# self-signed => Enables self-signed certificates
SSL_TYPE=letsencrypt
SSL_DOMAIN=mydomain.com

# These are only supported with `SSL_TYPE=manual`.
# Provide the path to your cert and key files that you've mounted access to within the container.
SSL_CERT_PATH=
SSL_KEY_PATH=
# Optional: A 2nd certificate can be supported as fallback (dual cert support), eg ECDSA with an RSA fallback.
# Useful for additional compatibility with older MTA and MUA (eg pre-2015).
SSL_ALT_CERT_PATH=
SSL_ALT_KEY_PATH=

# Set how many days a virusmail will stay on the server before being deleted
# empty => 7 days
VIRUSMAILS_DELETE_DELAY=

# Configure Postfix `virtual_transport` to deliver mail to a different LMTP client (default is a dovecot socket).
# Provide any valid URI. Examples:
#
# empty => `lmtp:unix:/var/run/dovecot/lmtp` (default, configured in Postfix main.cf)
# `lmtp:unix:private/dovecot-lmtp` (use socket)
# `lmtps:inet:<host>:<port>` (secure lmtp with starttls)
# `lmtp:<kopano-host>:2003` (use kopano as mailstore)
POSTFIX_DAGENT=

# Set the mailbox size limit for all users. If set to zero, the size will be unlimited (default). Size is in bytes.
#
# empty => 0
POSTFIX_MAILBOX_SIZE_LIMIT=

# See https://docker-mailserver.github.io/docker-mailserver/edge/config/user-management/accounts/#notes
# 0 => Dovecot quota is disabled
# 1 => Dovecot quota is enabled
ENABLE_QUOTAS=0

# Set the message size limit for all users. If set to zero, the size will be unlimited (not recommended!). Size is in bytes.
#
# empty => 10240000 (~10 MB)
POSTFIX_MESSAGE_SIZE_LIMIT=

# Mails larger than this limit won't be scanned.
# ClamAV must be enabled (ENABLE_CLAMAV=1) for this.
#
# empty => 25M (25 MB)
CLAMAV_MESSAGE_SIZE_LIMIT=

# Enables regular pflogsumm mail reports.
# This is a new option. The old REPORT options are still supported for backwards compatibility. If this is not set and reports are enabled with the old options, logrotate will be used.
#
# not set => No report
# daily_cron => Daily report for the previous day
# logrotate => Full report based on the mail log when it is rotated
PFLOGSUMM_TRIGGER=daily_cron

# Recipient address for pflogsumm reports.
#
# not set => Use REPORT_RECIPIENT or POSTMASTER_ADDRESS
# => Specify the recipient address(es)
PFLOGSUMM_RECIPIENT=postmaster@mydomain.com

# Sender address (`FROM`) for pflogsumm reports if pflogsumm reports are enabled.
#
# not set => Use REPORT_SENDER
# => Specify the sender address
PFLOGSUMM_SENDER=noreply@mydomain.com

# Interval for logwatch report.
#
# none => No report is generated
# daily => Send a daily report
# weekly => Send a report every week
LOGWATCH_INTERVAL=daily

# Recipient address for logwatch reports if they are enabled.
#
# not set => Use REPORT_RECIPIENT or POSTMASTER_ADDRESS
# => Specify the recipient address(es)
LOGWATCH_RECIPIENT=

# Sender address (`FROM`) for logwatch reports if logwatch reports are enabled.
#
# not set => Use REPORT_SENDER
# => Specify the sender address
LOGWATCH_SENDER=

# Defines who receives reports if they are enabled.
# **empty** => ${POSTMASTER_ADDRESS}
# => Specify the recipient address
REPORT_RECIPIENT=

# Defines who sends reports if they are enabled.
# **empty** => mailserver-report@${DOMAINNAME}
# => Specify the sender address
REPORT_SENDER=noreply@mydomain.com

# Changes the interval in which log files are rotated
# **weekly** => Rotate log files weekly
# daily => Rotate log files daily
# monthly => Rotate log files monthly
#
# Note: This Variable actually controls logrotate inside the container
# and rotates the log files depending on this setting. The main log output is
# still available in its entirety via `docker logs mail` (Or your
# respective container name). If you want to control logrotation for
# the Docker-generated logfile see:
# https://docs.docker.com/config/containers/logging/configure/
#
# Note: This variable can also determine the interval for Postfix's log summary reports, see [`PFLOGSUMM_TRIGGER`](#pflogsumm_trigger).
LOGROTATE_INTERVAL=weekly

# Defines how many log files are kept by logrorate
LOGROTATE_COUNT=4


# If enabled, employs `reject_unknown_client_hostname` to sender restrictions in Postfix's configuration.
#
# - **0** => Disabled
# - 1 => Enabled
POSTFIX_REJECT_UNKNOWN_CLIENT_HOSTNAME=0

# Choose TCP/IP protocols for postfix to use
# **all** => All possible protocols.
# ipv4 => Use only IPv4 traffic. Most likely you want this behind Docker.
# ipv6 => Use only IPv6 traffic.
#
# Note: More details at http://www.postfix.org/postconf.5.html#inet_protocols
POSTFIX_INET_PROTOCOLS=ipv4

# Enables MTA-STS support for outbound mail.
# More details: https://docker-mailserver.github.io/docker-mailserver/v13.3/config/best-practices/mta-sts/
# - **0** ==> MTA-STS disabled
# - 1 => MTA-STS enabled
ENABLE_MTA_STS=1

# Choose TCP/IP protocols for dovecot to use
# **all** => Listen on all interfaces
# ipv4 => Listen only on IPv4 interfaces. Most likely you want this behind Docker.
# ipv6 => Listen only on IPv6 interfaces.
#
# Note: More information at https://dovecot.org/doc/dovecot-example.conf
DOVECOT_INET_PROTOCOLS=ipv4

# -----------------------------------------------
# --- SpamAssassin Section ----------------------
# -----------------------------------------------

ENABLE_SPAMASSASSIN=0

# KAM is a 3rd party SpamAssassin ruleset, provided by the McGrail Foundation.
# If SpamAssassin is enabled, KAM can be used in addition to the default ruleset.
# - **0** => KAM disabled
# - 1 => KAM enabled
#
# Note: only has an effect if `ENABLE_SPAMASSASSIN=1`
ENABLE_SPAMASSASSIN_KAM=1

# deliver spam messages to the inbox (tagged using SPAM_SUBJECT)
SPAMASSASSIN_SPAM_TO_INBOX=1

# spam messages will be moved in the Junk folder (SPAMASSASSIN_SPAM_TO_INBOX=1 required)
MOVE_SPAM_TO_JUNK=1

# spam messages will be marked as read
MARK_SPAM_AS_READ=0

# add 'spam info' headers at, or above this level
SA_TAG=2.0

# add 'spam detected' headers at, or above this level
SA_TAG2=6.31

# triggers spam evasive actions
SA_KILL=10.0

# -----------------------------------------------
# --- Fetchmail Section -------------------------
# -----------------------------------------------

ENABLE_FETCHMAIL=0

# The interval to fetch mail in seconds
FETCHMAIL_POLL=300
# Use multiple fetchmail instances (1 per poll entry in fetchmail.cf)
# Supports multiple IMAP IDLE connections when a server is used across multiple poll entries
# https://otremba.net/wiki/Fetchmail_(Debian)#Immediate_Download_via_IMAP_IDLE
FETCHMAIL_PARALLEL=0

# Enable or disable `getmail`.
#
# - **0** => Disabled
# - 1 => Enabled
ENABLE_GETMAIL=1

# The number of minutes for the interval. Min: 1; Max: 30.
GETMAIL_POLL=5

# -----------------------------------------------
# --- OAUTH2 Section ----------------------------
# -----------------------------------------------

# empty => OAUTH2 authentication is disabled
# 1 => OAUTH2 authentication is enabled
ENABLE_OAUTH2=

# Specify the user info endpoint URL of the oauth2 provider
# Example: https://oauth2.example.com/userinfo/
OAUTH2_INTROSPECTION_URL=

# -----------------------------------------------
# --- LDAP Section ------------------------------
# -----------------------------------------------

# A second container for the ldap service is necessary (i.e. https://hub.docker.com/r/bitnami/openldap/)

# empty => no
# yes => LDAP over TLS enabled for Postfix
LDAP_START_TLS=

# empty => mail.example.com
# Specify the `<dns-name>` / `<ip-address>` where the LDAP server is reachable via a URI like: `ldaps://mail.example.com`.
# Note: You must include the desired URI scheme (`ldap://`, `ldaps://`, `ldapi://`).
LDAP_SERVER_HOST=

# empty => ou=people,dc=domain,dc=com
# => e.g. LDAP_SEARCH_BASE=dc=mydomain,dc=local
LDAP_SEARCH_BASE=

# empty => cn=admin,dc=domain,dc=com
# => take a look at examples of SASL_LDAP_BIND_DN
LDAP_BIND_DN=

# empty** => admin
# => Specify the password to bind against ldap
LDAP_BIND_PW=

# e.g. `"(&(mail=%s)(mailEnabled=TRUE))"`
# => Specify how ldap should be asked for users
LDAP_QUERY_FILTER_USER=

# e.g. `"(&(mailGroupMember=%s)(mailEnabled=TRUE))"`
# => Specify how ldap should be asked for groups
LDAP_QUERY_FILTER_GROUP=

# e.g. `"(&(mailAlias=%s)(mailEnabled=TRUE))"`
# => Specify how ldap should be asked for aliases
LDAP_QUERY_FILTER_ALIAS=

# e.g. `"(&(|(mail=*@%s)(mailalias=*@%s)(mailGroupMember=*@%s))(mailEnabled=TRUE))"`
# => Specify how ldap should be asked for domains
LDAP_QUERY_FILTER_DOMAIN=

# -----------------------------------------------
# --- Dovecot Section ---------------------------
# -----------------------------------------------

# empty => no
# yes => LDAP over TLS enabled for Dovecot
DOVECOT_TLS=

# e.g. `"(&(objectClass=PostfixBookMailAccount)(uniqueIdentifier=%n))"`
DOVECOT_USER_FILTER=

# e.g. `"(&(objectClass=PostfixBookMailAccount)(uniqueIdentifier=%n))"`
DOVECOT_PASS_FILTER=

# Define the mailbox format to be used
# default is maildir, supported values are: sdbox, mdbox, maildir
DOVECOT_MAILBOX_FORMAT=maildir

# empty => no
# yes => Allow bind authentication for LDAP
# https://wiki.dovecot.org/AuthDatabase/LDAP/AuthBinds
DOVECOT_AUTH_BIND=

# -----------------------------------------------
# --- Postgrey Section --------------------------
# -----------------------------------------------

ENABLE_POSTGREY=0
# greylist for N seconds
POSTGREY_DELAY=300
# delete entries older than N days since the last time that they have been seen
POSTGREY_MAX_AGE=35
# response when a mail is greylisted
POSTGREY_TEXT="Delayed by Postgrey"
# whitelist host after N successful deliveries (N=0 to disable whitelisting)
POSTGREY_AUTO_WHITELIST_CLIENTS=5

# -----------------------------------------------
# --- SASL Section ------------------------------
# -----------------------------------------------

ENABLE_SASLAUTHD=0

# empty => pam
# `ldap` => authenticate against ldap server
# `shadow` => authenticate against local user db
# `mysql` => authenticate against mysql db
# `rimap` => authenticate against imap server
# Note: can be a list of mechanisms like pam ldap shadow
#SASLAUTHD_MECHANISMS=rimap
SASLAUTHD_MECHANISMS=shadow

# empty => None
# e.g. with SASLAUTHD_MECHANISMS rimap you need to specify the ip-address/servername of the imap server  ==> xxx.xxx.xxx.xxx
SASLAUTHD_MECH_OPTIONS=

# empty => Use value of LDAP_SERVER_HOST
# Note: You must include the desired URI scheme (`ldap://`, `ldaps://`, `ldapi://`).
SASLAUTHD_LDAP_SERVER=

# empty => Use value of LDAP_BIND_DN
# specify an object with privileges to search the directory tree
# e.g. active directory: SASLAUTHD_LDAP_BIND_DN=cn=Administrator,cn=Users,dc=mydomain,dc=net
# e.g. openldap: SASLAUTHD_LDAP_BIND_DN=cn=admin,dc=mydomain,dc=net
SASLAUTHD_LDAP_BIND_DN=

# empty => Use value of LDAP_BIND_PW
SASLAUTHD_LDAP_PASSWORD=

# empty => Use value of LDAP_SEARCH_BASE
# specify the search base
SASLAUTHD_LDAP_SEARCH_BASE=

# empty => default filter `(&(uniqueIdentifier=%u)(mailEnabled=TRUE))`
# e.g. for active directory: `(&(sAMAccountName=%U)(objectClass=person))`
# e.g. for openldap: `(&(uid=%U)(objectClass=person))`
SASLAUTHD_LDAP_FILTER=

# empty => no
# yes => LDAP over TLS enabled for SASL
# If set to yes, the protocol in SASLAUTHD_LDAP_SERVER must be ldap:// or missing.
SASLAUTHD_LDAP_START_TLS=

# empty => no
# yes => Require and verify server certificate
# If yes you must/could specify SASLAUTHD_LDAP_TLS_CACERT_FILE or SASLAUTHD_LDAP_TLS_CACERT_DIR.
SASLAUTHD_LDAP_TLS_CHECK_PEER=

# File containing CA (Certificate Authority) certificate(s).
# empty => Nothing is added to the configuration
# Any value => Fills the `ldap_tls_cacert_file` option
SASLAUTHD_LDAP_TLS_CACERT_FILE=

# Path to directory with CA (Certificate Authority) certificates.
# empty => Nothing is added to the configuration
# Any value => Fills the `ldap_tls_cacert_dir` option
SASLAUTHD_LDAP_TLS_CACERT_DIR=

# Specify what password attribute to use for password verification.
# empty => Nothing is added to the configuration but the documentation says it is `userPassword` by default.
# Any value => Fills the `ldap_password_attr` option
SASLAUTHD_LDAP_PASSWORD_ATTR=

# empty => `bind` will be used as a default value
# `fastbind` => The fastbind method is used
# `custom` => The custom method uses userPassword attribute to verify the password
SASLAUTHD_LDAP_AUTH_METHOD=

# Specify the authentication mechanism for SASL bind
# empty => Nothing is added to the configuration
# Any value => Fills the `ldap_mech` option
SASLAUTHD_LDAP_MECH=

# -----------------------------------------------
# --- SRS Section -------------------------------
# -----------------------------------------------

# envelope_sender => Rewrite only envelope sender address (default)
# header_sender => Rewrite only header sender (not recommended)
# envelope_sender,header_sender => Rewrite both senders
# An email has an "envelope" sender (indicating the sending server) and a
# "header" sender (indicating who sent it). More strict SPF policies may require
# you to replace both instead of just the envelope sender.
SRS_SENDER_CLASSES=envelope_sender

# empty => Envelope sender will be rewritten for all domains
# provide comma separated list of domains to exclude from rewriting
SRS_EXCLUDE_DOMAINS=

# empty => generated when the image is built
# provide a secret to use in base64
# you may specify multiple keys, comma separated. the first one is used for
# signing and the remaining will be used for verification. this is how you
# rotate and expire keys
SRS_SECRET=

# -----------------------------------------------
# --- Default Relay Host Section ----------------
# -----------------------------------------------

# Setup relaying all mail through a default relay host
#
# Set a default host to relay all mail through (optionally include a port)
# Example: [mail.example.com]:587
DEFAULT_RELAY_HOST=[smtprelay.oraclecloud.com]:578

# -----------------------------------------------
# --- Multi-Domain Relay Section ----------------
# -----------------------------------------------

# Setup relaying for multiple domains based on the domain name of the sender
# optionally uses usernames and passwords in postfix-sasl-password.cf and relay host mappings in postfix-relaymap.cf
#
# Set a default host to relay mail through
# Example: mail.example.com
RELAY_HOST=smtprelay.oraclecloud.com

# empty => 25
# default port to relay mail
RELAY_PORT=587

# -----------------------------------------------
# --- Relay Host Credentials Section ------------
# -----------------------------------------------

# Configure a relay user and password to use with RELAY_HOST / DEFAULT_RELAY_HOST

# empty => no default
RELAY_USER=myrelayuse

# empty => no default
RELAY_PASSWORD=myrelayusepassworf

Logs

Container startup log (click to view)

2024-07-02T21:36:45.721497+02:00 mail dovecot: master: Dovecot v2.3.19.1 (9b53102964) starting up for imap, lmtp, sieve
2024-07-02T21:36:48.465349+02:00 mail opendkim[1248]: OpenDKIM Filter v2.11.0 starting (args: -f)
2024-07-02T21:36:49.382306+02:00 mail opendmarc[1265]: OpenDMARC Filter v1.4.2 starting (args: -f -p inet:8893@localhost -P /var/run/opendmarc/opendmarc.pid)
2024-07-02T21:36:49.382357+02:00 mail opendmarc[1265]: additional trusted authentication services: mail.mydomain.com
2024-07-02T21:36:52.346455+02:00 mail postfix/postfix-script[1366]: starting the Postfix mail system
2024-07-02T21:36:52.366452+02:00 mail postfix/master[1367]: daemon started -- version 3.7.10, configuration /etc/postfix
2024-07-02T21:36:57.121634+02:00 mail amavis[1370]: starting. /usr/sbin/amavisd at mail.mydomain.com amavis-2.13.0 (20230106), Unicode aware, LC_CTYPE="C.UTF-8"
2024-07-02T21:36:57.121782+02:00 mail amavis[1370]: perl=5.036000, user=, EUID: 999 (999);  group=(), EGID: 999 999 (999 999)
2024-07-02T21:36:58.245532+02:00 mail amavis[1370]: Net::Server: Group Not Defined.  Defaulting to EGID '999 999'
2024-07-02T21:36:58.245692+02:00 mail amavis[1370]: Net::Server: User Not Defined.  Defaulting to EUID '999'
2024-07-02T21:36:58.304551+02:00 mail amavis[1370]: No ext program for   .zoo, tried: zoo
2024-07-02T21:36:58.304794+02:00 mail amavis[1370]: No ext program for   .doc, tried: ripole
2024-07-02T21:36:58.306887+02:00 mail amavis[1370]: No ext program for   .zst, tried: unzstd
2024-07-02T21:36:58.307000+02:00 mail amavis[1370]: No decoder for       .F
2024-07-02T21:36:58.307059+02:00 mail amavis[1370]: No decoder for       .doc
2024-07-02T21:36:58.307113+02:00 mail amavis[1370]: No decoder for       .zoo
2024-07-02T21:36:58.307194+02:00 mail amavis[1370]: No decoder for       .zst
2024-07-02T21:36:58.307386+02:00 mail amavis[1370]: Using primary internal av scanner code for ClamAV-clamd
2024-07-02T21:36:58.313148+02:00 mail amavis[1370]: Found secondary av scanner ClamAV-clamscan at /usr/bin/clamscan
2024-07-02T21:39:32.193407+02:00 mail postfix/postscreen[1705]: cache btree:/var/lib/postfix/postscreen_cache full cleanup: retained=0 dropped=0 entries
2024-07-02T21:39:32.208661+02:00 mail postfix/postscreen[1705]: CONNECT from [10.0.0.2]:60470 to [10.0.0.99]:25
2024-07-02T21:39:35.762392+02:00 mail postfix/postscreen[1705]: PREGREET 5 after 3.6 from [10.0.0.2]:60470: helo\n
2024-07-02T21:39:35.762528+02:00 mail postfix/postscreen[1705]: BARE NEWLINE from [10.0.0.2]:60470 after helo
2024-07-02T21:40:06.624491+02:00 mail postfix/postscreen[1705]: NON-SMTP COMMAND from [10.0.0.2]:60470 after UNIMPLEMENTED: ?
2024-07-02T21:40:06.624731+02:00 mail postfix/postscreen[1705]: DISCONNECT [10.0.0.2]:60470
2024-07-02T21:40:56.638712+02:00 mail postfix/postscreen[1705]: CONNECT from [10.0.0.2]:40434 to [10.0.0.99]:25
2024-07-02T21:41:00.645024+02:00 mail postfix/postscreen[1705]: HANGUP after 4 from [10.0.0.2]:40434 in tests before SMTP handshake
2024-07-02T21:41:00.645052+02:00 mail postfix/postscreen[1705]: DISCONNECT [10.0.0.2]:40434
2024-07-02T21:41:23.853825+02:00 mail postfix/postscreen[1705]: CONNECT from [10.0.0.2]:40495 to [10.0.0.99]:25
2024-07-02T21:41:29.854602+02:00 mail postfix/postscreen[1705]: PASS NEW [10.0.0.2]:40495
2024-07-02T21:41:29.971869+02:00 mail postfix/smtpd[1912]: connect from unknown[10.0.0.2]
2024-07-02T21:41:41.003662+02:00 mail postfix/smtpd[1912]: lost connection after CONNECT from unknown[10.0.0.2]
2024-07-02T21:41:41.004401+02:00 mail postfix/smtpd[1912]: disconnect from unknown[10.0.0.2] commands=0/0
2024-07-02T21:45:01.160310+02:00 mail postfix/anvil[1915]: statistics: max connection rate 1/60s for (smtpd:10.0.0.2) at Jul  2 21:41:29
2024-07-02T21:45:01.160348+02:00 mail postfix/anvil[1915]: statistics: max connection count 1 for (smtpd:10.0.0.2) at Jul  2 21:41:29
2024-07-02T21:45:01.160374+02:00 mail postfix/anvil[1915]: statistics: max cache size 1 at Jul  2 21:41:29
2024-07-02T22:36:01.772593+02:00 mail dovecot: master: Dovecot v2.3.19.1 (9b53102964) starting up for imap, lmtp, sieve
2024-07-02T22:36:04.461453+02:00 mail opendkim[1060]: OpenDKIM Filter v2.11.0 starting (args: -f)
2024-07-02T22:36:05.363708+02:00 mail opendmarc[1073]: OpenDMARC Filter v1.4.2 starting (args: -f -p inet:8893@localhost -P /var/run/opendmarc/opendmarc.pid)
2024-07-02T22:36:05.363748+02:00 mail opendmarc[1073]: additional trusted authentication services: mail.mydomain.com
2024-07-02T22:36:07.452595+02:00 mail postfix/postfix-script[1162]: starting the Postfix mail system
2024-07-02T22:36:07.474117+02:00 mail postfix/master[1163]: daemon started -- version 3.7.10, configuration /etc/postfix
2024-07-02T22:36:11.595782+02:00 mail amavis[1166]: starting. /usr/sbin/amavisd at mail.mydomain.com amavis-2.13.0 (20230106), Unicode aware, LC_CTYPE="C.UTF-8"
2024-07-02T22:36:11.595916+02:00 mail amavis[1166]: perl=5.036000, user=, EUID: 999 (999);  group=(), EGID: 999 999 (999 999)
2024-07-02T22:36:11.686094+02:00 mail amavis[1166]: Net::Server: Group Not Defined.  Defaulting to EGID '999 999'
2024-07-02T22:36:11.686250+02:00 mail amavis[1166]: Net::Server: User Not Defined.  Defaulting to EUID '999'
2024-07-02T22:36:11.733969+02:00 mail amavis[1166]: No ext program for   .zoo, tried: zoo
2024-07-02T22:36:11.734214+02:00 mail amavis[1166]: No ext program for   .doc, tried: ripole
2024-07-02T22:36:11.736277+02:00 mail amavis[1166]: No ext program for   .zst, tried: unzstd
2024-07-02T22:36:11.736388+02:00 mail amavis[1166]: No decoder for       .F
2024-07-02T22:36:11.736444+02:00 mail amavis[1166]: No decoder for       .doc
2024-07-02T22:36:11.736496+02:00 mail amavis[1166]: No decoder for       .zoo
2024-07-02T22:36:11.736548+02:00 mail amavis[1166]: No decoder for       .zst
2024-07-02T22:36:11.736652+02:00 mail amavis[1166]: Using primary internal av scanner code for ClamAV-clamd
2024-07-02T22:36:11.742328+02:00 mail amavis[1166]: Found secondary av scanner ClamAV-clamscan at /usr/bin/clamscan
2024-07-02T22:38:06.278789+02:00 mail dovecot: master: Dovecot v2.3.19.1 (9b53102964) starting up for imap, lmtp, sieve
2024-07-02T22:38:10.072325+02:00 mail postfix/postfix-script[1091]: starting the Postfix mail system
2024-07-02T22:38:10.093033+02:00 mail postfix/master[1095]: daemon started -- version 3.7.10, configuration /etc/postfix
2024-07-02T22:39:03.482289+02:00 mail postfix/postscreen[1223]: warning: getpeername: Transport endpoint is not connected -- dropping this connection
2024-07-02T22:39:03.499779+02:00 mail dovecot: imap-login: Disconnected: Connection closed: read(size=1026) failed: Connection reset by peer (disconnected before auth was ready, waited 0 secs): user=<>, rip=10.0.0.2, lip=10.0.0.187, session=<OYdOtEkc1dEKAAAC>

I started the container, created a user, and now it's almost 24 hours I'm trying to authenticate it from email client (macOS mail.app) but all I get are these errors:

2024-07-03T15:59:31.023998+02:00 mail dovecot: auth: Error: passwd-file /etc/dovecot/userdb:User postmaster@mydomain.com has invalid UID '0'
2024-07-03T15:59:31.121934+02:00 mail dovecot: auth: passwd-file(postmaster,10.0.0.2): unknown user (SHA1 of given password: d26e5b)
2024-07-03T15:59:33.123708+02:00 mail postfix/submissions/smtpd[46869]: warning: unknown[10.0.0.2]: SASL PLAIN authentication failed: (reason unavailable), sasl_username=postmaster
2024-07-03T15:59:37.167339+02:00 mail dovecot: auth: passwd-file(postmaster,10.0.0.2): unknown user (SHA1 of given password: d26e5b)
2024-07-03T15:59:39.169262+02:00 mail postfix/submissions/smtpd[46869]: warning: unknown[10.0.0.2]: SASL PLAIN authentication failed: (reason unavailable), sasl_username=postmaster
2024-07-03T15:59:43.377312+02:00 mail dovecot: auth: passwd-file(postmaster,10.0.0.2): unknown user (SHA1 of given password: d26e5b)
2024-07-03T15:59:45.380113+02:00 mail postfix/submissions/smtpd[46869]: warning: unknown[10.0.0.2]: SASL LOGIN authentication failed: UGFzc3dvcmQ6, sasl_username=postmaster
2024-07-03T15:59:49.723090+02:00 mail dovecot: auth: passwd-file(postmaster,10.0.0.2): unknown user (SHA1 of given password: d26e5b)
2024-07-03T15:59:51.225054+02:00 mail postfix/submissions/smtpd[46869]: warning: unknown[10.0.0.2]: SASL LOGIN authentication failed: UGFzc3dvcmQ6, sasl_username=postmaster

which, in fairness, are reported all over the internet since at least 3 years, both for dovecot and docker-mailserver, but with no explanation.

Configs

Checking both dovecot-masters.cf and postfix-accounts.cf the user is there:

$ cat dovecot-masters.cf
postmaster@mydomain.com|{SHA512-CRYPT}$6$mUBwcINVaoLtyQtn$h4VwTqdZj50i6r.U4U1x31XlIN7PxGX2QMtHIUA2tBdSAcfoHdy46PRa7ZeZk5WGjOOOCSaQ/WddeOJUVVPHv1

$ cat postfix-accounts.cf
postmaster@mydomain.com|{SHA512-CRYPT}$6$msnLvTn2UslW5FU4$.TmFv.TgPB4/ccYLEwX2Rcxyu3.XctIGIUv2hVa8X9XoQ1YDqyqhjKhiX7mn4V7b2mw8zqvA.7NqLHRpO02fp0

Checking out /etc/dovecot inside the container for user settings, the user is there as well:

$ cat /etc/dovecot/userdb
postmaster@mydomain.com:{SHA512-CRYPT}$6$msnLvTn2UslW5FU4$.TmFv.TgPB4/ccYLEwX2Rcxyu3.XctIGIUv2hVa8X9XoQ1YDqyqhjKhiX7mn4V7b2mw8zqvA.7NqLHRpO02fp0:0:0::/var/mail/mydomain.com/postmaster/home::

[unlucio]

For further info, here is the Dovecot and Postfix config state:

Output of `dovecot -n`

$ dovecot -n

# 2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.19 (4eae2f79)
# OS: Linux 5.15.0-113-generic x86_64 Debian 12.5 ext4
# Hostname: mail.mydomain.com
auth_master_user_separator = *
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = sha1:6
hostname = mail.mydomain.com
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
listen = *
mail_home = /var/mail/%d/%n/home/
mail_location = maildir:/var/mail/%d/%n
mail_privileged_group = docker
maildir_stat_dirs = yes
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext special-use imapflags notify imapsieve vnd.dovecot.imapsieve vnd.dovecot.pipe vnd.dovecot.filter
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    auto = subscribe
    special_use = \Junk
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix =
}
passdb {
  args = scheme=SHA512-CRYPT username_format=%u /etc/dovecot/userdb
  driver = passwd-file
  mechanisms = plain login
}
passdb {
  args = scheme=SHA512-CRYPT username_format=%u /etc/dovecot/masterdb
  driver = passwd-file
  master = yes
  result_success = continue
}
plugin {
  imapsieve_mailbox1_before = file:/usr/lib/dovecot/sieve-pipe/learn-spam.sieve
  imapsieve_mailbox1_causes = COPY
  imapsieve_mailbox1_name = Junk
  imapsieve_mailbox2_before = file:/usr/lib/dovecot/sieve-pipe/learn-ham.sieve
  imapsieve_mailbox2_causes = COPY
  imapsieve_mailbox2_from = Junk
  imapsieve_mailbox2_name = INBOX
  sieve = ~/.dovecot.sieve
  sieve_after = /usr/lib/dovecot/sieve-global/after/
  sieve_before = /usr/lib/dovecot/sieve-global/before/
  sieve_dir = ~/sieve
  sieve_extensions = +notify +imapflags +special-use +vnd.dovecot.pipe +vnd.dovecot.filter
  sieve_filter_bin_dir = /usr/lib/dovecot/sieve-filter
  sieve_global_extensions = +editheader
  sieve_pipe_bin_dir = /usr/lib/dovecot/sieve-pipe
  sieve_plugins = sieve_imapsieve sieve_extprograms
}
postmaster_address = postmaster@mydomain.com
protocols = " imap lmtp sieve"
service aggregator {
  chroot =
}
service anvil {
  chroot =
}
service auth {
  unix_listener /dev/shm/sasl-auth.sock {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-master {
    group = docker
    mode = 0600
    user = docker
  }
  unix_listener auth-userdb {
    group = docker
    mode = 0666
    user = docker
  }
}
service director {
  chroot =
}
service imap-login {
  chroot =
  inet_listener imaps {
    port = 993
    ssl = yes
  }
}
service imap-urlauth-login {
  chroot =
}
service ipc {
  chroot =
}
service lmtp {
  unix_listener lmtp {
    group = postfix
    mode = 0660
  }
}
service managesieve-login {
  chroot =
}
service old-stats {
  chroot =
}
service pop3-login {
  chroot =
  inet_listener pop3s {
    ssl = yes
  }
}
service stats {
  unix_listener stats-reader {
    mode = 00
  }
  unix_listener stats-writer {
    mode = 00
  }
}
service submission-login {
  chroot =
}
ssl = required
ssl_cert = </etc/letsencrypt/live/mydomain.com/fullchain.pem
ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
stats_writer_socket_path =
userdb {
  args = username_format=%u /etc/dovecot/userdb
  default_fields = uid=docker gid=docker home=/var/mail/%d/%u/home/
  driver = passwd-file
}
protocol lmtp {
  mail_plugins = " sieve"
}
protocol lda {
  mail_plugins = " sieve"
}
protocol imap {
  mail_plugins = " imap_sieve"
}

$ cat /etc/dovecot/conf.d/auth-passwdfile.conf.ext

# Authentication for passwd-file users. Included from 10-auth.conf.
#
# passwd-like file with specified location.
# <doc/wiki/AuthDatabase.PasswdFile.txt>

passdb {
  driver = passwd-file
  args = scheme=CRYPT username_format=%u /etc/dovecot/users
}

userdb {
  driver = passwd-file
  args = username_format=%u /etc/dovecot/users

  # Default fields that can be overridden by passwd-file
  #default_fields = quota_rule=*:storage=1G

  # Override fields from passwd-file
  #override_fields = home=/home/virtual/%u
}

Output of `postconf -n`

$ postconf -n

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
compatibility_level = 3.6
disable_vrfy_command = yes
dms_smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_sender_domain
header_checks = pcre:/etc/postfix/maps/header_checks.pcre
inet_interfaces = all
inet_protocols = ipv4
mailbox_size_limit = 0
message_size_limit = 10240000
milter_default_action = accept
milter_protocol = 6
mua_sender_restrictions = reject_authenticated_sender_login_mismatch, $dms_smtpd_sender_restrictions
mydestination = $myhostname, localhost.$mydomain, localhost
mydomain = mydomain.com
myhostname = mail.mydomain.com
mynetworks =
non_smtpd_milters =
postscreen_bare_newline_action = enforce
postscreen_dnsbl_action = ignore
postscreen_dnsbl_allowlist_threshold = -1
postscreen_dnsbl_sites =
postscreen_dnsbl_threshold = 3
postscreen_greet_action = enforce
readme_directory = no
recipient_delimiter = +
relayhost = [smtprelay.oraclecloud.com]:578
rspamd_milter = inet:localhost:11332
sender_dependent_relayhost_maps = texthash:/etc/postfix/relayhost_map
smtp_header_checks = pcre:/etc/postfix/maps/sender_header_filter.pcre
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = texthash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_tls_CApath = /etc/ssl/certs
smtp_tls_loglevel = 1
smtp_tls_policy_maps = socketmap:unix:/var/run/mta-sts/daemon.sock:postfix
smtp_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtp_tls_security_level = encrypt
smtpd_banner = $myhostname ESMTP
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_data_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_pipelining
smtpd_delay_reject = yes
smtpd_discard_ehlo_keywords = silent-discard, dsn
smtpd_forbid_bare_newline = yes
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks, reject_invalid_helo_hostname, permit
smtpd_milters = $rspamd_milter
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_unknown_recipient_domain
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_sasl_auth_enable = no
smtpd_sasl_local_domain = $mydomain
smtpd_sasl_path = /dev/shm/sasl-auth.sock
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = unionmap:{ texthash:/etc/postfix/virtual, hash:/etc/aliases, pcre:/etc/postfix/maps/sender_login_maps.pcre, pcre:/etc/postfix/regexp }
smtpd_sender_restrictions = $dms_smtpd_sender_restrictions
smtpd_tls_CApath = /etc/ssl/certs
smtpd_tls_chain_files = /etc/letsencrypt/live/mydomain.com/key.pem /etc/letsencrypt/live/mydomain.com/fullchain.pem
smtpd_tls_dh1024_param_file = /etc/postfix/dhparams.pem
smtpd_tls_exclude_ciphers = aNULL, SEED, CAMELLIA, RSA+AES, SHA1
smtpd_tls_loglevel = 1
smtpd_tls_mandatory_ciphers = high
smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtpd_tls_security_level = may
smtputf8_enable = no
tls_high_cipherlist = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
tls_preempt_cipherlist = yes
tls_ssl_options = NO_COMPRESSION, NO_RENEGOTIATION
virtual_alias_maps = texthash:/etc/postfix/virtual
virtual_mailbox_domains = /etc/postfix/vhost
virtual_mailbox_limit = 0
virtual_mailbox_maps = texthash:/etc/postfix/vmailbox
virtual_transport = lmtp:unix:/var/run/dovecot/lmtp

[polarathene]

This error really needs an answer or a better log line..

It is not an error we control, it is directly from Dovecot itself.

and docker-mailserver, but with no explanation.

Well that's doubtful, considering I know I've helped troubleshoot such issues in the past with verbose detailed replies.

Environment details + macOS compatibility caveats

I'm trying to authenticate it from email client (macOS mail.app)

You haven't filed a proper bug report, and here you only shared a .env file (which btw is not as nice to look through vs being explicitly clear about the ENV you actually configured yourself). A compose.yaml and environment details would be nice.

Are you also running this on macOS? We have had macOS users in the past with issues and these are almost always resolved by running Docker from an actual Linux VM, instead of the volume mount or network caveats that Docker seems to have with macOS (one of these IIRC is related to UID 0 with bind mounts, but macOS has several volume drivers IIRC, search the issues online for more info).

If you are trying to run DMS on macOS I am going to suggest you try reproduce with a proper linux environment (VMware, VirtualBox, etc should be fine). Often you cannot reproduce it and the only reason DMS is run via Docker on macOS is for convenience / dev testing, not actual production deployment... thus it's really not something we support as we have no control over those quirks.

We once had some patches for improved macOS support but those were dropped as they either introduced other issues or were a maintenance burden / inconsistent fix.

Logs + Troubleshooting advice

As for the logs... is this your first time deploying a mail server of your own? Or first time with the mail.app client with a mail server that isn't a proprietary service?

SASL PLAIN authentication failed: (reason unavailable)
unknown user (SHA1 of given password: d26e5b)

Chances are this might be due to the input Dovecot is receiving. So you were right in your recent issue to try debug with doveadm auth test.

Once you can get that to work properly (and it does in a compatible environment), if you still have an issue it'll be with your mail client setup.

Mail Client advice if needed

Mail submission:

• Plain text with STARTTLS on port 587
• Plain text with TLS (implicit) on port 465

SASL is used internally for Postfix to connect to Dovecot for auth.

Dovecot IMAP/POP3 ports should be similar, here is an example with ThunderBird, note that the user login name differs from the account address:

https://github.com/orgs/docker-mailserver/discussions/2575#discussioncomment-3439509

[unlucio]

You haven't filed a proper bug report, and here you only shared a .env file (which btw is not as nice to look through vs being explicitly clear about the ENV you actually configured yourself). A compose.yaml and environment details would be nice.

I haven't filled a bug report because I don't think I found a bug. I start assuming I'm the one that did something wrong, before assuming it's a bug. Yes, the env file is long, but starting from a "I must have done something wrong" position I thought my thorough config would have been useful.

Are you also running this on macOS? We have had macOS users in the past with issues and these are almost always resolved by running Docker from an actual Linux VM, instead of the volume mount or network caveats that Docker seems to have with macOS (one of these IIRC is related to UID 0 with bind mounts, but macOS has several volume drivers IIRC, search the issues online for more info).

No, I'm running on linux. If I tried it out on macOS I would have assumed that the whole virtualization thing could have been a problem and I would have tested it at least on a linux machine. I don't assume docker on mac is "standard" in any way.

As for the logs... is this your first time deploying a mail server of your own? Or first time with the mail.app client with a mail server that isn't a proprietary service?

It's not the 1st time I deployed a mail server, tho the last time was around 20 years ago when there used to be fewer issues with being flagged as a spammer. I used Qmail at that time.
Not my 1st time configuring a mail client (nor mail.app) either, tho I've been using mostly web clients for the last decade or so. I still plan to put a web-client on top of DMS, mail.app was just convenient to use because it was there.

SASL PLAIN authentication failed: (reason unavailable)
unknown user (SHA1 of given password: d26e5b)

Chances are this might be due to the input Dovecot is receiving. So you were right in your recent issue to try debug with doveadm auth test.

Once I got those errors my 1st hypothesis was that mail.app, being an apple product, was perhaps doing something non-standard. So I moved to doveadm auth test with my tests and, once that one was failing too, I needed help (well, still need it 😆)

Once you can get that to work properly (and it does in a compatible environment), if you still have an issue it'll be with your mail client setup.

yes, now my goal is to have doveadm auth test work properly so I can be confident the server is ok once i move to the client part.

Mail Client advice if needed

Mail submission:

• Plain text with STARTTLS on port 587
• Plain text with TLS (implicit) on port 465
  SASL is used internally for Postfix to connect to Dovecot for auth.
  Dovecot IMAP/POP3 ports should be similar, here is an example with ThunderBird, note that the user login name differs from the account address:

Thank you for sharing those einfo, I will keep them in account if I'll try mail.app again, but as for now the eplan is to use a web-based client.

[polarathene]

Let's focus the discussion on the associated issue: #4098 (comment)

The problem is likely specific to Docker Swarm usage, doveadm auth test without swarm will help confirm this.