The remote host is missing an update to sendmail announced via advisory MDKSA-2006:156.
Moritz Jodeit discovered a vulnerability in sendmail when processing very long header lines that could be exploited to cause a Denial of Service by crashing sendmail.
The updated packages have been patched to correct this issue.
Affected: 2006.0, Corporate 3.0, Multi Network Firewall 2.0
Solution: To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you.