The remote host is missing an update as announced via advisory SSA:2004-049-02.

https://secure1.securityspace.com/smysecure/catid.html?in=SSA:2004-049-02

Metamail is a set of utilities for processing MIME mail. New metamail packages are available for Slackware 8.1, 9.0, 9.1, and -current. These fix two format string bugs and two buffer overflows which could lead to unauthorized code execution. Thanks to Ulf Härnhammar for discovering these problems and providing a patch. More details about this issue may be found in the Common Vulnerabilities and Exposures (CVE) database: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0104 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0105