elsdoerfer/exim-sender repository overview

Exim 4 specifically configured to act as an outgoing SMTP service. Bounces go a local directory in /var/spool/exim4/bounces.

⁠Environment variables:

ALLOWED_HOSTS ; separated list of allowed senders. Used within an Exim hostlist, may include networks (192.168.23.0/24 : my.friend.example).

PRIMARY_HOST Exim's primary_hostname setting; you should also be able to specify a hostname for your Docker container instead.

⁠Example:

docker run -p 4444:25 -v /tmp/exim:/var/spool/exim4 -e PRIMARY_HOST=example.org -e ALLOWED_HOSTS="194.168.59.1/16" elsdoerfer/exim-sender

⁠Volumes you may want to share:

/var/spool/exim4

⁠TODO:

• Support TLS
• Support authentication as alternative to ip-based lockdown