Postfix maildrop queue and rsyslog issue

[Diego Puertas]

Hello,

I've a problem with postfix and rsyslog.

Symptoms: Mail gets stuck in the maildrop queue, it takes a lot of time to deliver email.

Treatment: Restarting the rsyslog deamon. This lets the messages get picked up from the maildrop queue very fast.


I've already read http://www.postfix.org/BASIC_CONFIGURATION_README.html#syslog_howto , and did what they suggest:

> IMPORTANT: on Linux you need to put a "-" character before the
> pathname, e.g., -/var/log/maillog, otherwise the syslogd process
> will use more system resources than Postfix.

My rsyslog is full of hyphens, and still from time to time I'll have messages stuck on the maildrop queue, and I still need to restart rsyslog for them to be picked up.

What can I do?


Some other info that might be relevant:

* After I restart rsyslog it would stop writing to the log files. I'll need to reboot the server for rsyslog to resume logging.

* The postfix version is 2.9.6

* The operating system is Ubuntu 12.04

* The server is a VMware VM.


Thanks

--
Diego A Puertas

[Viktor Dukhovni]

On Wed, Oct 29, 2014 at 03:21:34PM +0000, Diego Puertas wrote:

> I've a problem with postfix and rsyslog.
>
> Symptoms: Mail gets stuck in the maildrop queue, it takes a lot of time to deliver email.

My advice is to switch to syslog-ng. Make sure you configure a
"dgram" not "stream" log socket.

--
Viktor.