Secunia Security Advisory – Gentoo has issued an update for postfix. This fixes a vulnerability, which can be exploited by malicious, local users to cause a DoS (Denial of Service).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/70227/sa31986.txt
Source: https://packetstormsecurity.com/files/70227/Secunia-Security-Advisory-31986.html