The remote host is missing an update to mozilla-thunderbird announced via advisory MDVSA-2009:083.

To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. https://secure1.securityspace.com/smysecure/catid.html?in=MDVSA-2009:083 http://www.mozilla.org/security/known-vulnerabilities/thunderbird20.html#thunderbird2.0.0.21

A number of security vulnerabilities have been discovered in previous versions, and corrected in the latest Mozilla Thunderbird program, version 2.0.0.21 (CVE-2009-0040, CVE-2009-0776, CVE-2009-0771, CVE-2009-0772, CVE-2009-0773, CVE-2009-0774, CVE-2009-0352, CVE-2009-0353). This update provides the latest Thunderbird to correct these issues. Additionaly, Mozilla Thunderbird released with Mandriva Linux 2009.0, when used with Enigmail extension on x86_64 architechture, would freeze whenever any Enigmail function was used (bug #45001). Also, when used on i586 architecture, Thunderbird would crash when sending an email, if a file with an unknown extension was attached to it. (bug #46107) This update also fixes those issues. Affected: 2008.1, 2009.0, Corporate 3.0