Could Be OT: How many people only accept reverse DNS lookupmail?

[Billy A. Pumphrey]

> -----Original Message-----
> From: Michael Baird [mailto:mike at tc3net.com]
> Sent: Thursday, August 17, 2006 10:24 AM
> To: MailScanner discussion
> Subject: Re: Could Be OT: How many people only accept reverse DNS
> lookupmail?
> 
> On Thu, 2006-08-17 at 09:11 -0400, Billy A. Pumphrey wrote:
> > Does anyone only accept email that will do a reverse lookup?  Does
> > anyone recommend it?
> 
> I use it on all my inbound MX's, it's pretty standard, you won't see
any
> problems using it, all the bigger ISP's implemented it some time ago,
> and brought the smaller guys into line.
> 
> I've been testing http://smfs.sourceforge.net/smf-sav.html this milter
> as well, on a lower pref MX (Spam Catcher). It goes further then just
> checking reverse DNS, it also checks whether the domain actually
accepts
> mail, and if it accepts mail for the specified sender.
> 
> Regards
> Michael Baird
> 
> --

Thank you for everyone's input.  I was configuring my Exchange box some
and ran across that setting and it came to mind.  Sounds like this
setting is in the sendmail configuration.  I am going to go ahead and
configure it.  

Do you think I should put this setting in sendmail or exchange or both?