tigerblue77/postfix_smtp_relay repository overview

⁠Postfix SMTP relay

A Postfix SMTP relay that your other containers send their mail through, with optional DKIM signing (OpenDKIM), SRS rewriting (PostSRSd), SASL authentication on both sides and log forwarding (rsyslog). Everything is configured with environment variables.

This image continues mwader/postfix-relay⁠: same variables, same volumes, a new name. Switching is an ordinary upgrade.

Documentation: github.com/tigerblue77/Postfix_SMTP_relay_Docker⁠

⁠Quick start

docker run -e POSTFIX_myhostname=smtp.domain.tld tigerblue77/postfix_smtp_relay

With Compose, next to the application that sends mail:

services:
  app:
    image: your-app
    # sends its mail to the host "smtp", which is the service below

  smtp:
    image: tigerblue77/postfix_smtp_relay
    restart: always
    environment:
      - POSTFIX_myhostname=smtp.domain.tld

⁠Tags

• latest: the last commit of master whose image was pulled back from this registry and passed its tests on amd64 and arm64.
• sha-<commit>: one per commit of master.
• Version tags (2, 2.0, 2.0.0, …) start with the first release under this name. The 1.x versions exist only as mwader/postfix-relay.

Architectures: amd64, arm64 and arm/v7. SRS rewriting is unavailable on arm/v7.

The same images are mirrored at ghcr.io/tigerblue77/postfix_smtp_relay.

⁠License

AGPL-3.0-only, with a commercial licence available. The terms are in the repository⁠ and inside the image, under /root.