One of my users *always* gets an alert from avast! when receiving any sort of email from one specific address. No one else gets an alert from this address's emails, and none of the supposedly infected attachments trigger anything on any other computer with any other antivirus. Is there a way to add this address to a whitelist for *scanning*? I see the option for spam but that doesn't seem to be at issue here (and didn't seem to have any effect).