Re: PTR Records

"MC" <mc@xxxxxxxx> wrote in message
news:u%23aIFTO9FHA.1028@xxxxxxxxxxxxxxxxxxxxxxx
>I ran some Reverse DNS Lookups for our domain and have a problem that I'm
> not sure how to solve. We have a filter that receives all incoming email
> (so
> the MX record is set to the filter's IP), but each Exchange 2000 server
> sends its own outgoing email. We do have PTR records for all of the
> Exchange
> servers, but they are not listed first, so the domains that check PTR
> records are refusing email from us because our PTR records don't point
> back
> to the original IP.

"Not listed first"?? What specifically does this mean in this case?

Your reverse records must be in a publicly accessible, properly
delegated reverse zone (likely at your ISP) if you wish everyone
to accept your outgoing email.

The value returned (the name) should also be an A-Host record
with the same Name to Address mapping.

This is not (precisely) an RFC but it is enforced by some email
servers.

> If one of you kind souls has a few minutes to help with
> this, please send me an email and I will provide the IPs that have the
> problem! Thanks!
>

Try www.DNSReport.com to assist you in troubleshooting this.

And/or give us the domain name so we can also check.

--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]

>


.

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