Hello,
We have been testing for a few weeks a patch to implement SMTP bounce.
The code available here : https://github.com/ircf/sendy_smtp_bounce
Feel free to use and/or redistribute.
This code consists in two parts:
- A patch to apply to your sendy install, so the Return-Path can be customized with your bounce mailbox (bounce config must be set in sendy config file)
- A bounce.php program and helper classes to copy to your sendy install. The bounce.php must be added to your crontab so it can check periodically the bounce mailbox
Do not hesitate to report bugs
Mathieu at IRCF.