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.
