dovecot - May 2014 - RFE: please add Return-Path: to sieve sent mail headers

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 at domain>

Copy of From: header line could be sufficient.

Thanks.

MU

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On 5/13/2014 1:58 PM, Maciej Uhlig <maciej.uhlig at us.edu.pl>
wrote:
> Return-Path: <>
>
> Would be nice to get:
>
> Return-Path: <user at domain>
No, no, no, null sender is *required* for these kinds of messages.

-- 

Best regards,

Charles

Am 13.05.2014 19:58, schrieb Maciej Uhlig:
> 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: <>
which is correct
> Would be nice to get:
> 
> Return-Path: <user at domain>
> 
> Copy of From: header line could be sufficient
which is completly insane in case you don't log every
single vacation and stop after the first one to the
same address

guess what happens if two persons have a vacation
resonder at the same time and one of them sends
a mail - the faster server with more storage will
win that battle

may i ask to read some RFC's and consider the
impact of sloppy proposals if one would make
them real?

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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 at 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.