Per the subject, SMSMSE 7.5 running on Small Business Server 2008 (Exchange 2007 SP3). There's no file level anti-virus running on the server. We're receiving 100's of the "inovice PDF" e-mails.. if I save the attachment and copy it to my workstation, a competitor immediately detects it as PDF/Exploit.CVE-2013-2729.E but SMSMSE auto-protect and manual scans aren't detecting it at all.
I've tried changing the agent priority and it's made no difference. The definitions are up-to-date. Advanced Heuristics Detection is enabled. Bloodhound detection is set to High. Autoprotect is set to scan message bodies, and on virus definition update force rescan before allowing access to information store.... so why is SMSMSE missing an infection that has had definitions for over 2 months that isn't even compressed?
Is there anything I can do to improve matters? I really don't want to have to start enabling custom file filters for something that should be picked up by definitions?