Thanks Alvin, But Im not allowed to reject based on rbl's, we tried that and in NZ lots of companies use adsl and cable modems so we had huge issues and political flak. Such business broadband is being heavily sold by our major telco as a solution and trying to tell people who don't understand how to manage the box on the end of their connection is hard work. Those same people also have huge political clout as I have found out to my cost...
Stuff like not in dns and non-rfc compliance I can get away with though as I can justify it by telling the remote admins to go configure their server properly (though even that is hard work as those same admins complain to my higher ups about us being anal) spammers obviously wont ask...... Regards Thing -----Original Message----- From: Alvin Oga [mailto:[EMAIL PROTECTED] Sent: Thursday, 11 August 2005 9:32 a.m. To: Steven Jones Cc: [email protected] Subject: Re: sendmail On Thu, 11 Aug 2005, Steven Jones wrote: > Anybody got some recommendation on tuning sendmail to reject spam? > Things like mis-behaving remote smtp server or servers not in dns ie > domain does not exist....low cpu overhead stuff in your sendmail.mc, just add a couple of lines and re-generate sendmail.cf ( "zero cpu load" stuff ) .. list of your fav rbls ... 3-5 of um .. FEATURE(`enhdnsbl', `bl.spamcop.net', `Spammer $&{client_addr} $&f rejected by RBL: http://bl.spamcop.net') FEATURE(`enhdnsbl', `dnsbl.njabl.org', `Spammer $&{client_addr} $&f rejected by RBL: http://dnsbl.njabl.org') ========= examples sendmail.mc files w/ RBLs checking http://www.Linux-Sec.net/Mail/etc.mail/sendmail-8.13.3/ http://www.Linux-Sec.net/Mail/etc.mail c ya alvin
