smtpprox-loopprevent

Transparent SMTP proxy to prevent mail forwarding loops

Install

All systems
curl cmd.cat/smtpprox-loopprevent.sh
Debian Debian
apt-get install smtpprox-loopprevent
Ubuntu
apt-get install smtpprox-loopprevent
image/svg+xml Kali Linux
apt-get install smtpprox-loopprevent
Windows (WSL2)
sudo apt-get update sudo apt-get install smtpprox-loopprevent
Raspbian
apt-get install smtpprox-loopprevent
Dockerfile
dockerfile.run/smtpprox-loopprevent

smtpprox-loopprevent

Transparent SMTP proxy to prevent mail forwarding loops

smtpprox-loopprevent is a transparent SMTP proxy which rejects a message if any of the recipient addresses match a Delivered-To header. It was written to be used as a Postfix before-queue filter.