3 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Maildrop return-path
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Jonas GenanntMay 28, 2007 2:15 pm 
Sam VarshavchikMay 28, 2007 3:27 pm 
Alessandro VeselyMay 29, 2007 2:02 am 
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Subject:Re: [courier-users] Maildrop return-pathActions...
From:Alessandro Vesely (ves@tana.it)
Date:May 29, 2007 2:02:58 am
List:net.sourceforge.lists.courier-users

Jonas Genannt wrote:

if (/^To: fo@bar.com$/:h ) { to "!fo@otherisp.com" }

[...] Is it possible that maildrop does not change the Return-Path?

I'd say one _should_ change the return-path, e.g. specifying -f post@bar.com as an option to sendmail. (I assume that post@bar.com is responsible for the above piece of code.)

PROs: * in case the mailbox fo@otherisp.com is removed, someone will stop that forwarding.

* in case the server at otherisp.com applies SPF filtering, messages will be delivered even from senders whose domains publish strict SPF records.

CONs: * DSNs (including success ones) won't reach original senders. To fix this one has to resort to a more complicate SRS-based mechanism that still allows the postmaster to get failure reports.