levigroker/postfix repository overview

⁠docker-postfix

github repo⁠

⁠Postfix⁠ server with SMTP authentication (sasldb) and optional TLS and OpenDKIM support.

⁠Requirements

• Docker⁠

⁠Installation

1. Build image

    $ sudo docker pull levigroker/postfix
   

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⁠Usage

1. Create postfix container with smtp authentication

    $ docker run -p 25:25 \
    		-e maildomain=mail.example.com -e smtp_user=user:pwd \
    		--name postfix -d levigroker/postfix
    # Set multiple user credentials: -e smtp_user=user1:pwd1,user2:pwd2,...,userN:pwdN
   

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2. Enable OpenDKIM: save your domain key .private in /path/to/domainkeys

    $ docker run -p 25:25 \
    		-e maildomain=mail.example.com -e smtp_user=user:pwd \
    		-v /path/to/domainkeys:/etc/opendkim/domainkeys \
    		--name postfix -d levigroker/postfix
   

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3. Enable TLS(587): save your SSL certificates .key and .crt to /path/to/certs

    $ docker run -p 587:587 \
    		-e maildomain=mail.example.com -e smtp_user=user:pwd \
    		-v /path/to/certs:/etc/postfix/certs \
    		--name postfix -d levigroker/postfix
   

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⁠Note

• Login credentials should be set to ([email protected], password) in SMTP client
• You can assign the port of MTA on the host machine to one other than 25 (postfix how-to⁠)
• Read the reference below to find out how to generate domain keys and add public key to the domain's DNS records

⁠Reference

• Postfix SASL How To⁠
• How To Install and Configure DKIM with Postfix on Debian Wheezy⁠

⁠Disclaimer and Licence

• Forked from https://github.com/catatnight/docker-postfix⁠
• This work is licensed with the MIT license. Please see the included LICENSE.txt for complete details.

⁠About

A professional iOS engineer by day, my name is Levi Brown. Authoring a blog grokin.gs⁠, I am reachable via:

Twitter @levigroker⁠
Email [email protected]⁠

Your constructive comments and feedback are always welcome.