Unable to connect

[ekkis]

I've started the container using docker-compose as suggested. successfully added an account:

$ setup.sh email list

admin@whatever.io

but when I try to telnet into the server (I want to follow something like: http://commandlinemac.blogspot.com/2008/12/smtp-testing-from-command-line.html) I just get immediately disconnected

$ telnet localhost 25

Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

what could the issue here be?

[ekkis]

just for kicks I configured my mail client to try to connect to localhost. I tried using both "admin@whatever.io" and "admin" for the user name (both failed). tried port 587, with and without SSL (both failed), port 25. no can do. it cannot connect

[ekkis]

also, I've exec'd into the container (telnet's not available but nc is) and tried this:

# echo -e "EHLO whatever.io\nAUTH PLAIN MDBhZG1pbjAwbjBtNGlsLXBhc3Mt\n" |nc localhost 25

220 mail.whatever.io ESMTP Postfix (Ubuntu)
250-mail.whatever.io
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
535 5.7.8 Error: authentication failed:
500 5.5.2 Error: bad syntax

where the parameter to AUTH PLAIN was generated like this (notice I'm using only "admin" as the account name ("admin@whatever.io" produces similar results)):

perl -MMIME::Base64 -e 'print encode_base64("00admin00mypass")'

help?

[ekkis]

more thrashing about. I changed my docker-compose.yml to look like this:

  mail:
    image: tvial/docker-mailserver:2.1
    hostname: mail
    domainname: mydomain.com
    container_name: mail
    ports:
    - "25:25"
    - "587:587"
    volumes:
    - ./mail/data:/var/mail
    - ./mail/state:/var/mail-state
    - ./mail/config:/tmp/docker-mailserver/
    environment:
    - ENABLE_SPAMASSASSIN=1
    - ENABLE_CLAMAV=1
    - ENABLE_FAIL2BAN=1
    - ENABLE_POSTGREY=1
    - ONE_DIR=1
    - DMS_DEBUG=1
    - SMTP_ONLY=1
    - SSL_TYPE=self-signed
    - ENABLE_SASLAUTHD=1
    - PERMIT_DOCKER=host
    cap_add:
    - NET_ADMIN

so as you can see, I turned debugging on, made the server SMTP only (I only need it to send mail), turned on SSL (with a self-signed cert), and enabled SASL's AUTHD. I also found PERMIT_DOCKER, which I believe means it can share services with my docker host (from where I'm performing the testing)

I rebuilt the image like this:

docker-compose up -d --no-deps --build mail
and verified that the running container now has only 2 ports mapped. and attempted again to test using telnet. as before, it just hangs up on me.

I also tried connecting using openssl but that didn't go very well either:

$ openssl s_client -starttls smtp -crlf -connect localhost:25

> CONNECTED(00000003)
> didn't found starttls in server response, try anyway...
> 140735150669904:error:140790E5:SSL routines:ssl23_write:ssl handshake failure:s23_lib.c:177:
> ---
> no peer certificate available
> ---
> No client certificate CA names sent
> ---
> SSL handshake has read 0 bytes and written 343 bytes
> ---
> New, (NONE), Cipher is (NONE)
> Secure Renegotiation IS NOT supported
> Compression: NONE
> Expansion: NONE
> No ALPN negotiated
> SSL-Session:
>     Protocol  : TLSv1.2
>     Cipher    : 0000
>     Session-ID: 
>     Session-ID-ctx: 
>     Master-Key: 
>     Key-Arg   : None
>     PSK identity: None
>     PSK identity hint: None
>     SRP username: None
>     Start Time: 1489800209
>     Timeout   : 300 (sec)
>     Verify return code: 0 (ok)
> ---

I also found that my previous Base64 encryption was messed up. this is correct:

perl -MMIME::Base64 -e 'print encode_base64("\000admin\000mypass")'

but when trying it I get authentication failures:

535 5.7.8 Error: authentication failed: authentication failure

for both the account name "admin" and the fully-qualified version:

perl -MMIME::Base64 -e 'print encode_base64("\000admin\@whatever.io\000mypass")'

so I just can't get this to work

[ekkis]

all right. enough aggravation with this. I found something that actually just works: sudo docker pull catatnight/postfix

[ekkis]

I closed the issue but, actually, I think I'll leave it open. I'm happy to work with whomever wants to help to see if we can figure it out and help the project

[tomav]

Hi @ekkis,

There are a lot of comments so I'm gonna try to answer as I can.

• In your first comment, connection is refused in IPv6 but worked in IPv4. So that's ok.
• Username are full address email as stated in the Wiki.
• These scripts may help to test authentication through telnet or netcat
• If you just need a SMTP, you're right, you will find other docker images for that. This image is useful if you want to setup a full mail server.
• If you need more help, please follow the Guidelines => configuration + startup debug log

Let me know if I can help.

[tomav]

Hi @ekkis, without news from you, I close this issue.
Feel free to reopen with necessary items and we'll help you.
Thanks.