topic Re: Sendmail Reverse PTR lookup configuration in Operating System - Linux

Sendmail Reverse PTR lookup configuration

Renjith Nair — Mon, 20 Feb 2006 04:39:31 GMT

dear all

I want to set up a MTA such that whenever a mail received by that MTA it should automatically look for a reverse lookup for that ip. If that ip doesn't match the hostname or MX then it should deny that mail. can anybody suggest an option

thanks in advance
renjith

Re: Sendmail Reverse PTR lookup configuration

Stuart Browne — Mon, 20 Feb 2006 06:30:55 GMT

Start by making sure that the feature 'accept_unresolvable_domains' is *NOT* included in your '/etc/mail/sendmail.mc'.

SEP was kind enough to give us some idea's on the MX-check side of things a few weeks ago..

Re: Sendmail Reverse PTR lookup configuration

Vipulinux — Mon, 20 Feb 2006 06:44:27 GMT

Hi
Check this out :
http://www.sendmail.org/m4/anti_spam.html#access_db

Cheers

Re: Sendmail Reverse PTR lookup configuration

Ivan Ferreira — Mon, 20 Feb 2006 06:47:39 GMT

See this thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=450771