Sendmail Reverse PTR lookup configuration

[Renjith Nair]

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

[Stuart Browne]

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..

[Vipulinux]

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


Cheers

[Ivan Ferreira]

See this thread:

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