MailScanner suddently taking all the CPU and a lot of memory.

[Yannick Cayer]

Greetings,
 
 
 
I have the following configuration:
 
 
mailscanner-4.25-14
with spamassassin 2.61
sendmail 8.11.6-27
 
on an IBM x235 
 
2 2.4GHZ Processors
1.25 GHZ of RAM
Hot swapable raid 5 config.
 
 
We have about a 100 small sites configured for mail mostly and some,
web.
 
This is running on RedHat Linux 7.3 Kernel 2.4.18-27.7.xsmp
 
We have been running MailScanner on that machine for almost 2 years now
without any problems.
 
 
Since last week, MailScanner has been bringing the server almost to a
complete halt, loads are skyrocking very suddently to 200! It is also
taking at that time about 25MB per MailScanner process.
 
It does this for several minutes to a few hours and then suddently comes
back.
 
I really don't know what can be causing this.
 
I have read the mail archives for this problem but the solutions I found
were not appropriate to my specific problem/condition.
 
 
My config has the max attachments set to 5 and the MailScanner processes
set to 10 (5 per CPU).
 
 
 
Can anyone help?
 
 
Thank you in advance.
 
 
 
 
 
 
 
 
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