• spamhammerd
    spamhammerd is a simple perl script to help combat spammers. spammers are generally sloppy, and tend to blast every address they know of on your mail server at the same time, even if they don't exist. spamhammer watches your logfile (currently works only with postfix) and dynamically creates an accessfile. connections are tracked, and every time a client attempts to send to an unknown user, the counter is incremented. when the threshold is crossed, the ip is blocked for a configurable length of time
    Tags: postfix, spam
  • Performance Tuning PostgreSQL
    Tags: postgresql