Hello,
I have a problem with OpenSMTPD (version 6.8.0p2) on my Linux installation
(Void Linux distribution).
OpenSMTPD seems to write times in UTC instead of my configured system time zone
(Europe/Berlin).
Example header from a local delivered mail:
From abc Wed Sep 28 21:09:55 2022
Return-Path: <webmas...@yourdomain.com>
Delivered-To: abc@localhost
Received: from localhost (xyz.localdomain [local])
by xyz.localdomain (OpenSMTPD) with ESMTPA id 020e7525
for <abc@localhost>;
Wed, 28 Sep 2022 19:09:55 +0000 (UTC)
Date: Wed, 28 Sep 2022 21:09:55 +0200 (CEST)
To: abc@localhost
From: webmas...@yourdomain.com
Subject: Test Email
Message-ID: <b4b222b031806af8@xyz.localdomain>
In the "Date" header the local time in the correct time zone is used. In the
"Received" header which is added by OpenSMTPD the time is stated in UTC,
regardless of the time zone of the system.
The same problem exists for the log file (/var/log/socklog/mail/current):
2022-09-28T19:09:10.78118 mail.info: Sep 28 21:09:10 smtpd[2699]: info:
OpenSMTPD 6.8.0p2 starting
2022-09-28T19:09:55.62957 mail.info: Sep 28 21:09:55 smtpd[2703]:
b4b222afa5939ddc smtp connected address=local host=xyz.localdomain
2022-09-28T19:09:55.63338 mail.info: Sep 28 19:09:55 smtpd[2703]:
b4b222afa5939ddc smtp message msgid=020e7525 size=389 nrcpt=1 proto=ESMTP
2022-09-28T19:09:55.63342 mail.info: Sep 28 19:09:55 smtpd[2703]:
b4b222afa5939ddc smtp envelope evpid=020e752572255a45
from=<webmas...@yourdomain.com> to=<abc@localhost>
2022-09-28T19:09:55.63347 mail.info: Sep 28 19:09:55 smtpd[2703]:
b4b222afa5939ddc smtp disconnected reason=quit
2022-09-28T19:09:57.64998 mail.info: Sep 28 19:09:57 smtpd[2703]:
b4b222b1cbdebff4 mda delivery evpid=020e752572255a45
from=<webmas...@yourdomain.com> to=<abc@localhost> rcpt=<abc@localhost>
user=abc delay=2s result=Ok stat=Delivered
2022-09-28T19:11:20.45865 mail.info: Sep 28 21:11:20 smtpd[2699]: Exiting
When the OpenSMTPD process starts it logs with the local time (21:09:10). When
processing mails it changes over to UTC (19:09:55). And when it exits it uses
local time again (21:11:20). I don't think that this behaviour is intended.
I suppose that the problem appears due to the privdrop to the _smtpd or the
_smtpq user. Do you have any hints where to search further for the cause?
Obviously when the C function "localtime" is called, the time is not returned
in the systems time zone.
The problem is probably Void Linux specific, since I don't have this problem on
a OpenBSD installation.
Thanks in advance,
Nils
P.S.: This is a cross-post of
https://github.com/void-linux/void-packages/issues/39918
