M

mta

This is a SMTP docker container for sending emails. You can also relay emails to gmail and amazon SES. Based heavily on namshi/docker-smtp, but using the debian:stable-slim image.

SMTP (email) server with a focus on simplicity, security, and ease of operation [mirror]

sendmail.py — Dynamic sendmail wrapper. Drop‑in replacement for /usr/sbin/sendmail that normalises outgoing email and relays it through a backend MTA (msmtp, nullmailer‑inject, sendmail/Postfix, Exim).

spf is an open source implementation of the Sender Policy Framework (SPF) in Go.

It is used by the chasquid and maddy SMTP servers.

MTA Deployment

Go implementation for Postfix socketmap table lookup client.

The Exim MTA

Canonical git repo: https://git.exim.org/exim.git

Postfix image on an Alpine base. Users stored in a PostgreSQL database.

Mail header analyzer that checks malicious hostnames (MTAs) via abuseIP API. It also extracts useful information as sender and SPF checks.