Re: Sieve vacation + SRS + forwarded e-mail

On 2021-07-09, Saarts, Erik <erik.saarts@vty.ee> wrote:

We have domain A on cloud, from where mail gets forwarded to our local server to domain B. Forwarding is done in SPF-compliant way by using SRS (this part we have no control over).=C2=A0=C2=A0This SRS address ends up in Return-Path header, and sieve vacation replies to=C2=A0this address.

This is all absolutely correct, but also useless, as sending mail to SRS address leads nowhere.

That's a broken SRS setup then, if it doesn't handle responses to the sender address there will be some lost mail. Vacation and similar auto responses are _required_ to reply to the SMTP sender address.