A file that does not contain any virus may be stopped. The file is getting blocked because another antivirus company cleaned the file first. We cannot guarantee that the file has been cleaned completely; therefore, Email security cloud filters them.
The message that we intercept has the EML/Worm.xx.dam naming convention, where xx is an acronym of the antivirus software that inserted the warning or disclaimer.
This list contains all the antivirus software acronyms you find it in the EML/Worm.xx.dam:
AA = We are not sure what product "cleaned" it.
AB = WebShield.
AD = antivirus Defense.
AE = Antigen for exchange.
AM = Armour Virus Control.
BT = BT.
CA = Computer Associates AntiGen.
EM = eManager.
ES = Esafe.
FS = F-Secure.
GE = Groupshield.
IP = Israel Patents.
KWF = Kerio WinRoute Firewall.
MD = MIMEDefang.
MS = MailScanner.
NA = Norton.
NO = Norman.
PN = Panda.
RA = Rav antivirus.
RR = RoadRunner.
SM = ScanMail.
SN = snapmail.
SS = Stompsoft.
T3 = TC3Net E-Mail Virus Protection Service.
VW = InterScan E-Mail VirusWall.
WF = WatchGuard Firebox.
WSH = WebShield.
WS = WebShield (2).
T3 = TC3Net E-Mail Virus Protection Service.
VW = Interscan.
VW2 = InterScan Messaging Security Suite.
XX = We are unsure which virus scanner cleaned this file.