SMTP Virus scanner DoS
source: http://www.securityspace.com

Title: SMTP antivirus scanner DoS
ID: 11036
Category: Denial of Service
URL: http://www.securityspace.com/smysecu....html?id=11036
Summary: 42.zip antivirus MTA DoS
Description:
This script sends the 42.zip recursive archive to the
mail server. If there is an antivirus filter, it may start eating huge
amounts of CPU or memory.

Solution: Reconfigure your antivirus / upgrade it

Risk factor : High