Again thanks for all the great recommendations, I now have a few ways of trying to combat this if my plan doesn't work.
I have a utilized my spam filtering agent combined with a no rDNS rule and increased the score of that rule. If this along with DNSRBL doesn't work then I will give some of the others a try. -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Noel Jones Sent: Monday, June 01, 2015 2:52 PM To: postfix-users@postfix.org Subject: Re: Anyone else seeing an increase in spam? -- Sort of off topic but there is a postfix question On 6/1/2015 1:28 PM, Rich Wales wrote: > >> The reject_non_fqdn_hostname restriction will not block any of these. > > How about reject_unknown_reverse_client_hostname instead? This one is > supposed to reject clients with no IP-address-to-name mapping. > > Rich Wales > ri...@richw.org > Yes, reject_unknown_reverse_client_hostname will block these, and is (mostly) safe as many big mail providers refuse service to clients with no rDNS. -- Noel Jones
