The remote host is missing an update to courier announced via advisory DSA 1101-1. A bug has been discovered in the Courier Mail Server that can result in a number of processes to consume arbitrary amounts of CPU power. For the old stable distribution (woody) this problem has been fixed in version 0.37.3-2.9.

For the stable distribution (sarge) this problem has been fixed in version 0.47-4sarge5. For the unstable distribution (sid) this problem has been fixed in version 0.53.2-1. We recommend that you upgrade your courier packages. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201101-1