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From Thomas Mullins <>
Subject RE: little off topic monitoring question
Date Wed, 20 Jul 2011 13:37:21 GMT
Thanks Mark,

We are using Amavisd to call SpamAssassin.  Cacti looks great, we hope to implement Cacti
soon.  Thanks for the info, and many thanks for Amavisd.


-----Original Message-----
From: Mark Martinec [] 
Sent: Wednesday, July 20, 2011 7:25 AM
Subject: Re: little off topic monitoring question


> We would like to start monitoring our two smtp servers. They are 
> fairly busy boxes, maybe 100,000 messages a day, give or take several thousand.
> They of course run Spamassassin, Postfix is also used. We use MRTG to 
> monitor internal servers and switches, and would really like something 
> with a similar graph.

If you are using amavisd to call SpamAssassin (instead of spamd), then there is a huge number
of SNMP counters and gauges to monitor the operation in real time, including SNMP gauges on
current Postfix queue sizes. See:
for a list of available OIDs.

It involves a lightweight daemon amavisd-snmp-subagent, which collects statistics from amavisd
statistics database in almost- real time, and presents itself as na AgentX to a Net-SNMP daemon,
which deals with the SNMP protocol.

We are using Cacti for monitoring a selection of these stats.
No need to parse log files.

See also
slide 90 and onwards.


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