spamguard

MTA spam prevention program for qmail/postfix/sendmail

Nearly all of today's mail system administrators face spam as their first threat. Because of this, EnderUNIX team has written this small application to automagically monitor malicious spammer activity in your mail server logs. spamGuard is written purely in C, to stop spammers hanging around. The program supports nearly all mostly used MTAs; qmail (both multilog and splogger), sendmail and Postfix.