which tool (script, nagios plugin, whatever) can I use to monitor tge rate of outgoing mails on a postfix mail server? I would like that script to calculate the number of outgoing mails per minute or every ten minutes or so and alert me by e-mail if that rate exceeds a predefined number, thus detecting possible spam waves.
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Also see http://stackoverflow.com/q/4003732/282601 – cweiske Oct 31 '16 at 13:50
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Munin has two plugins, postfix_mailstats and postfix_mailvolume, which should do what you want. It can also cope with thresholds, and if those are exceeded feed a notification through a NAGIOS server, or directly to anything else you care to plug into it.
MadHatter
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Thanks for the answers. All helped me in on way or the other. In the end, I took the one core grep line for the munin plugin and wrapped my own alert script around it. – Michael Keller Oct 18 '12 at 19:53
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1Michael: glad we could help. Don't forget to accept your preferred answer by clicking on the "tick" outline next to it; it drives the SF reputation system for all concerned. – MadHatter Oct 19 '12 at 06:37
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Cacti® - The Complete RRDTool-based Graphing Solution, can do that for you.
alexus
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Check out qshape ; you should be able to awk sum params you want from qshape easily and send notice if needed. Periodic checks can be easily set up using cronjob.
Hrvoje Špoljar
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