Spam filtering in sendmail by using DNSBL definitions

digg_url = 'http://linuxpoison.blogspot.com/2008/01/spam-filtering-in-sendmail-by-using.html'; If you wish to be even more aggressive with your spam filtering, you can configure Sendmail to completely ignore senders that have bad reputations. With this step, Sendmail won’t even talk to them. Editing the file /etc/mail/sendmail.mc, insert the following lines anywhere in the FEATURE