Sieve "redirect" changes envelope sender in 2.3. / pigeonhole 0.5

[Olaf Hopp]

On 04/23/2018 03:46 PM, Olaf Hopp wrote:
> On 04/23/2018 03:22 PM, Stephan Bosch wrote:
>>
>>
>> Op 20-4-2018 om 14:01 schreef Olaf Hopp:
>>> Hi (Stephan?),
>>> is it a new feature of dovecot 2.3 /pigeonhole 0.5 that a sieve "redirect" changes the envelope sender of
>>> a redirected mail or simply a bug ?
>>>
>>> A sends mail to B, B redirects to C
>>> C sees B (not A!) as envelope sender.
>>> It is not a problem if C gets the mail but if that mail bounces
>>> for various reasons it goes back to B and A will never know about this.
>>>
>>> I thick this is came with 2.3 / pigeonhole 0.5 ?
>>>
>>> # 2.3.1 (c5a5c0c82): /etc/dovecot/dovecot.conf
>>> # Pigeonhole version 0.5.devel (61b47828)
>>> # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.9 (Final)
>>
>> Probably same as issue in this thread:
>>
>> https://www.dovecot.org/pipermail/dovecot/2018-April/111482.html
>>
> 
> Yes maybe.
> But I didn't see any sieve errors in the logs.
> In my case there is exim sitting in front of dovecot lmtp and as said
>      trusted_users = exim:dovecot
> in thge exim.conf resolved this issue for me.
> 
> Regards, Olaf

I digged deeper: in https://www.dovecot.org/pipermail/dovecot/2018-April/111485.html Stephan wrote

| Yeah, this is likely due to the fact that sendmail is now invoked using
| the program-client (same as Sieve extprograms), which takes great care
| to drop any unwanted (seteuid) root privileges.

and thats the reason why my exim now needs the dovecot user as trusted user so that
those redirects can retain the original envelope sender.

Thanks, Olaf


-- 
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