I've just picked a nasty scab having forgotten about this qmail-scanner issue completely. Stupid, stupid idiot that I am.
I have three servers all now running 11.0.9 with all the latest MU applied.
On the first server I noticed that qmail-scanner wasn't running as I'd received a few odd phishing mails which would normally have been picked up. So ran qmail-scanner-reconfigure and all was fine. The other two servers however needed the package reinstalling which was the downfall.
Same as before thousands of qmail-scanner processes get launched and each machines grinds to a halt. Very, very frustrating. The only way out seemed to be using the commands
yum remove qmail-scanner
/usr/local/psa/admin/sbin/autoinstaller --select-release-current --install-component postfix
/usr/local/psa/admin/sbin/autoinstaller --select-release-current --install-component qmail
This guarantees that the system will at least work by returning the system to normal by putting back the Plesk binaries.
Does any one know what the exact cause of this is? And is it possible to run qmail-scanner on a Plesk machine any more without risking rapid death?
Anyone have any thoughts?