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README.md

Postamt

I like to run my own mail server. The problem is, when I started, there were no containers around, Ubuntu was known as Maverick and I could only pay a little root server. So how to keep a never-change-a-running-system system up-to-date?

Meanwhile ansible and docker came around the corner - so they should fit a low-cost-I-have-to-do-it-once-in-a-few-years approach.

Objective

  • Provide a simple docker container with all the mail tools I need and easy provisioning.
  • Have an easy way to add or change domains, addresses and aliases.
  • check spf records.
  • helo_checks.

TODO

  • dkim
  • greylisting
  • postscreen
  • spamassassin
  • amavis

Usage

Build docker container

sudo docker build -t postamt .

Create persistence

sudo docker run --name postamt-persist -d -v /srv/postamt/data ubuntu:14.04 true

Run docker container

sudo docker run --name postamt \
    -p=25:25 \
    -p=143:143 \
    --volumes-from postamt-persist \
    postamt

Create virtual mail user

# see postamt admin help
sudo docker exec -it postamt postamt --help

# this will create a virtual domain, an email address and a user with password access
sudo docker exec -it postamt postamt user add foo@foo.bar -p foobar

Inside the postamt container

All variable data is located in /srv/postamt/data.

data
|-- helo_checks
|-- mail.sqlite
|-- ssl
|   |-- dovecot.crt
|   |-- dovecot.key
|   |-- postfix.crt
|   `-- postfix.key
`-- vmail

Notes

I took the howto from http://rob0.nodns4.us/howto/ and tried to implement it. Please see https://github.com/diefans/postamt-admin for the admin.

At the moment debugging is turned on, as long as I need it.

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A docker image for postamt

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