commit ineffective with AutoCommit enabled at /usr/mailscanner/lib/MailScanner/MailWatch.pm line 94, line 168.This a "normal" message and does not indicate that there is a problem. It apparently occurs because autocommit is enabled on the mysql database (by default) but there is code in the MailWatch script which tries to do a different kind of commit on the transaction. It is harmless and can safely be ignored.