In the cPanel front-end I've set my domain to scan (or not scan) for spam and/or viruses, but mail is still not being scanned (or is being scanned when it shouldn't be).

1. Check the ruleset files (usr/mailscanner/etc/rules/spam.scanning.rules and virus.scanning.rules) to see if the domain actually is listed correctly in there.

2. If it is correct in the ruleset files, make sure that if you are forwarding another domain's emails to this domain, that domain also has the same setting in the cPanel front-end and the ruleset files.

3. If the ruleset files are not correct, restart crond (type 'service crond restart' at the shell prompt), wait 10 minutes and check the ruleset files again to see if it is now correct.