The remote mail server is affected by multiple buffer overflow vulnerabilities.
The remote host is running Ipswitch Collaboration Suite / IMail, commercial messaging and collaboration suites for Windows. According to its banner, the version of Ipswitch Collaboration Suite / IMail installed on the remote host has several unspecified buffer overflows in various service components as well as one in an ActiveX control. An attacker may be able to leverage these issues to crash the affected service or execute arbitrary code remotely by default with LOCAL SYSTEM privileges.
Upgrade to version 2006.2 or higher.