This script is Copyright (C) 2000-2011 Tenable Network Security, Inc.
The remote SMTP server is affected by a remote denial of service
The remote SMTP server crashes when it is issued a HELO command with
an argument longer than 1200 chars.
This problem may allow an attacker to shut down your SMTP server.
See also :
Apply patches available from the vendor.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3