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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Only when I have a problem, which I seem to at the moment.
Two day in a row now I have had a problem with MailScanner 4.51.5-1 running in
RedHat FC1. It employs spam assassin, kaspersky, f-prot & mcafee virus
scanning. CPU usage etc hovers around 25% & all in all it works very well
processing around 20000 messages (6GBytes) a day.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have received a single message that brings mailscanner to
it’s knees .. the message enters the inbound mail queue, the MailScanner
processes defunct one by one till MailScanner is effectively not processing
mail any more, mail builds up in the inbound mail queue. This is exasperated by
the fact that although MailScanner reports as defunct in the process list it is
actually still identifying spam, & generating spam warning messages, which
in turn end up in the inbound queue… this seems to lead to a “DOS”
effect. </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have isolated the single message in it’s raw queue
qf & df files. Every time I place it into the inbound queue the processes
defunct, & yes I am ensuring there is no file permissions problems… If
anyone wants a copy of the message I can send them the queue files…. I’m
suspicious though that the Virus Scanning is where the problem lies, hence
without the combination of VC’s listed above it may run through the queue
… Any ideas? The one thing I’ve noticed about the header (qf file)
is that there seems to be some very long boundary strings emplyed.</span></font></p>
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font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Regards</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>KArl </span></font></p>
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<span lang=EN-GB style='font-size:7.5pt;font-family:Arial;color:gray'>Registered Office: <st1:Street
w:st="on"><st1:address w:st="on">5-7 Abbey Court</st1:address></st1:Street>, <st1:Street
w:st="on"><st1:address w:st="on">Eagle Way</st1:address></st1:Street>, Sowton, <st1:City
w:st="on">Exeter</st1:City>, <st1:place w:st="on"><st1:City w:st="on">Devon</st1:City>,
<st1:PostalCode w:st="on">EX2 7HY</st1:PostalCode></st1:place><br>
Registered Number 2892803 Registered in <st1:place w:st="on"><st1:country-region
w:st="on">England and Wales</st1:country-region></st1:place></span></font>
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