postfix
Posted by Thomas on November 2nd, 2007 at 9:30 pm
My spam traffic has decreased to minimum after I've inserted following lines in /etc/postfix/main.cf file (Postfix main configuration file). These settings made my SMTP server to spam resist. This method use DNS queries, what mean very fast UDP communication and use less memory and CPU then any spamfilter. If your hardware is weak or an all-in-one server than use this really fast and effective method.
Before: I received 200-300 spam a day.
Now: I receive only 1-2 unsolicited email a day.
