sendmail rdns question

[Paul Macdonald]

Hi,

Sorry for posting on a bsd list but i figure there's more than a few 
sendmail experts here.

I would like to run reverse dns checks on one of my boxes but the 
check_rnds macro looks a bit overkill to me.

I want to reject the mail if there's no reverse dns, but not if there is 
rdns but the PTR loop isn't closed (which is very common).

So accepting these types:

         reject=451 4.1.8 Possibly forged hostname for

    but rejecting these types
   reject=550 5.7.1 <........>... Fix reverse DNS for 
.......................

In sendmail, FEATURE(`require_rdns')dnl  seems to do both.

many thanks
Paul.


-- 

-------------------------
Paul Macdonald
IFDNRG Ltd
Web and video hosting
-------------------------
t: 0131 5548070
m: 07534206249
e: paul at ifdnrg.com
w: http://www.ifdnrg.com
-------------------------
IFDNRG
40 Maritime Street
Edinburgh
EH6 6SA
-------------------------