I have reinstalled (for the 3rd time in 2 days) both ClamAV and MailScanner. The installation looked fine without errors. But MailScanner simply doesn't kick in after I started it:

TO START: /usr/sbin/check_mailscanner
TO STOP: killall -TERM MailScanner

I have tested both:
Virus Scanners = clamav
Virus Scanners = clamavmodule (with Mail::ClamAV installed)

Everything looks fine BUT emails sent/received are still not scanned. Very weird.

I am using WHM/cPanel + RH Linux 9.ClamAV and MailScanner installed are the latest versions. All MailScanner rules are left to the default.

I'm getting the exact same thing. After the update Mailscanner is not scanning But spam assassin is.
Tried to reinstall mail scanner.. and a variation of stopping sendmail and restarting mailscanner. etc.

EDIT:
Was able to get mailscanner to start scanning on every domain but one. . Trying to Sort that now.

So what i have done:
installed the updated Clam and Mail scanner due to known issues.
After updateing mailscanner is callling spamassassin and now filting all domains.
The one domain was off the list.. /etc/MailScanner/rules/

At the end of MailScanner installation, it said I should do these:

service sendmail stop
chkconfig sendmail off
chkconfig MailScanner on
service MailScanner start

But for all the 4 commands, all I got was "Command not found". I am using RHEL5. What to do?

Are you executing these commands as root? If not, these commands won't be found. If so, you may have bigger issues.

Those commands are crucial, as without them, sendmail will deliver the mail on its own, without MailScanner touching them.

Good luck.

On my linux install, most of the service / chkconfig command are do not come up when doing

"service sendmail stop"
"service httpd start"

etc etc

you have specify the path such as..

/usr/sbin/service sendmail stop

etc etc...

try a :

"locate service"
or
"find service"

etc etc...then whatever path to that file..use that.