OT: how to check everything is working

Eduardo Casarero ecasarero at gmail.com
Thu Feb 12 18:13:29 GMT 2009

Hi, i've just had an strange scenario, on one of my servers cent os the I/O
controller just stoped working, and all FS went to Read Only. I actually
check this:

sendmail online
mailscanner online
disk usage
clamav pattern
ram/swap used
incomming messages waiting

this is reported to a mysql and showed in a webpage.

the problem is that this was working, but the server started rejecting all
emails with a 421 error "Can't write to the disk" so all trafic went to the
second MTA. so nobody realised that the server was down...

I started a google search and i found this "mailping"
http://mailping.sourceforge.net/ but it seems to be a dead project.

so is anyone using something like this? or has any idea?


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