On Fri, 2010-06-25 at 14:46 -0700, Daniel B. Thurman wrote: > I thought it was sufficient to look into the headers > of the offending email spammmers and add these respective > IP address and/or host names to the /etc/mail/access file, Attempting to block the sender addresses will never work because they can so easily be forged. Attempting to block IP addresses of spammers by hand will not work either. Spammers these days use botnets, networks of thousands of compromised boxes, so that their IP addresses change rapidly. By the time you discover and enter one of their IP's, they've already moved on to another one. What you need is a DNS-based block list which is maintained by people who are dedicated to keeping it up to date. This isn't perfect either but the reaction is far faster than you can ever do yourself. I use the Spamhaus XBL/SBL (www.spamhaus.org) for this both at work and at home; it catches 10 times more spams than our SpamAssassin-based content filters do. --Greg -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
