On 5/13/2014 7:58 PM, Maciej Uhlig wrote:
May I ask to add Return-Path: some meaningful header line to sieve sent mail headers in vacation message? Now the header line isn't generated at all and the effect is as follows:
on receiving MTA:
2014-05-09T15:04:32+02:00 host/ip postfix/qmgr[2408]: 41F2F6024E: from=<>, size=900, nrcpt=1 (queue active)
in received mail body:
Return-Path: <>
Would be nice to get:
Return-Path: <user@domain>
Copy of From: header line could be sufficient.
Use of NULL envelope sender is generally recommended to prevent mail loops:
http://tools.ietf.org/html/rfc5230#section-5.1 http://tools.ietf.org/html/rfc3834#section-3.3
Keep in mind that the From: header is set to something useful (http://tools.ietf.org/html/rfc5230#section-5.4). That is what the recipient will normally see.
If you know what you are doing (think twice about that!), you can override this behavior using the sieve_vacation_send_from_recipient setting (if your Pigeonhole is recent enough):
http://wiki2.dovecot.org/Pigeonhole/Sieve/Extensions/Vacation#Configuration
Regards,
Stephan.