Re: Spam filtering (was Top Posting)

On 7/07/2011, at 5:50 AM, Jim Lucas wrote: > On 7/5/2011 7:52 PM, Jim Giner wrote: >> And what do you use to cut down on spam in your in-box? > > This is completely off topic, but here it goes... > > When I received an email the other day from your mail server, I had created this > crazy ass reply to your automatic request for a reply. But in turn, just sent > the email with the link showing that your mail server is a source of spam. > > To answer your question, I use built in Postfix checks... > > Here are my list of options: > > reject_invalid_hostname, > reject_non_fqdn_hostname, > reject_non_fqdn_sender, > reject_non_fqdn_recipient, > reject_unknown_sender_domain, > reject_unknown_reverse_client_hostname, > reject_unknown_recipient_domain, > check_recipient_maps, > permit_mynetworks, > permit_sasl_authenticated, > reject_unauth_destination, > check_helo_access hash:/etc/postfix/helo_checks, > reject_invalid_helo_hostname, > reject_non_fqdn_helo_hostname, > reject_unknown_helo_hostname, > reject_rbl_client zen.spamhaus.org, > reject_rbl_client psbl.surriel.com, > reject_rbl_client korea.services.net, > permit > > With the above settings, I REJECT 99.9% of all SPAM that tries to enter my box. > > You are currently listed in my /etc/postfix/helo_checks file as > > 64.118.87.45 REJECT Your mail server is a source of SPAM. Fix it! I use grey-listing. It temporarily rejects emails from servers it doesn't recognise, which stops most spam but actual email gets through as they (correctly) retry. I also have a learning bayesian filter running in my mail client (Apple's Mail), which handles the spam that gets through the greylist. --- Simon Welsh Admin of http://simon.geek.nz/