bkram / smtpd-dual-delivery

SMTP dual delivery relay (proxy) daemon, this allows testing of a new server side by side of a production server, optionally saving proxied email as eml files.

smtpd-dual-delivery.py

SMTP dual delivery relay (proxy) daemon. Receive 1 message and deliver that to two different smtp servers, useful for testing 2 different mail backends.

smtpd-snoop-delivery.py

SMTP relay (proxy) daemon with the ability to save all passing email into eml files, quite useful for debugging or snooping :)

Warning

No queueing is implemented mail might get lost if one of the receiving servers is not handling the mail correctly.