Tuning MailScanner

Gerry Doris gerry at dorfam.ca
Thu May 22 21:40:59 IST 2003

I was reading the thread on running MailScanner with lower numbers of
children and/or reducing the number of messages/batch to be scanned.
However, I'm not sure I ever saw a concensus on what is best.

It sounded like it was dependend on the number of messages being received.
 If there weren't enough messages coming in to load all the instances of
MailScanner and only the first couple grabbed all the messages then it was
a waste running the other instances.

On the other hand, reducing the number of messages/batch would distribute
the mail load across all instances of MailScanner and would be more

If this is correct then the trick is to spread the mail load across as
many instances of MailScanner as possible as long as you don't run out of
server resources ie cpu load and memory.

Sendmail is very efficient.  The real problems are the virus/spam scanning
especially the RBL checking.

Is the above correct?


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