The remote host is vulnerable to a Denial of Service (DoS) attack.
The remote host is running SpamAssassin, an anti-spam software application that detects and blocks spam emails. This version of SpamAssassin is vulnerable to a flaw in that by creating a symbolic link, local attackers can cause the application to process a malformed file. Successful exploitation results in the application crashing and denying valid services to users.
Upgrade to version 3.2.1 or higher.