Begining with ZA 9.3 We now do not scan Outlook mail files
Reason: Our AV cannot read the Outlook mail format and see the actual messages/attachments.
If we detected something it is a false positive.
For the unfortunate users who quarantined or removed what was detected in there PST, that corrupted the PST and they lost all there email or part of it.
They also could not restore from quarantine.
So a lot of very upset users.
ZoneAlarm suggests highly that:
If you want to do it its at your own risk and responsibility if you loose data.
Otherwise add your Outlook PST files or outlook folders to the AV exception list
so there never scanned and then a possibility of a false positive happening and loss of data will not happen.