Question : MS Exchange SMTP reverse lookups

We need to tell our new ISP to setup a PTR so that email outbound from our mail server is not blocked by reverse lookups on the recipient side.

I have the IP for the mail server, but how do I find the correct domain name for this? Where is this located in MS Exchange System Manager? Here's where I'm looking:

Protocols/SMTP/Default SMTP Virtual Server/Properties/Delivery [tab]/Advanced...

In this window I have a fully-qualified valid domain name. Is this what I give the ISP for the PTR?

Answer : MS Exchange SMTP reverse lookups

Exchange has nothing to do with the host name used. You can use anything you like.
The PTR record needs to resolve. Therefore if you have gateway.example.com setup to point to your Exchange server, then that is what you would set as the PTR record. You would also set it on the SMTP virtual server.

However, can you not relay email out through the antispam server? That will ensure that you can put the restrictions in place that they require and not have problems with servers that call back to ensure you are an SMTP server.

Simon.