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Do Multiple domains, require multiple public ip address for PTR Records ?

Good Morning everyone...

I recently added 2 new domains to my exch 2007 server.

When I called my ISP to add the PTR records for these domains, they said I had to have a unique ip address for each domain, and I would need 3 public ip address for the 3 different domains on my domain.

Does this correct to everyone?

If it is correct, how do I force exchange to send email for a certain domain from a certain ip address..

I appreciate all of your help,
Liam

ASKER CERTIFIED SOLUTION

Sembee

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Yancey Landrum

Absolute rubbish. Your ISP is wrong. If your existing MX record looks like this:

IN MX 10 currentdomain.com
IN MX 100 backupspool.com

Then the two new domains would need MX records like this:

New domain 1:
IN MX 10 currentdomain.com
IN MX 100 backupspool.com

New domain 2:
IN MX 10 currentdomain.com
IN MX 100 backupspool.com

Yancey Landrum

I really should learn to refresh if my answer has been sitting for a while...sorry about that, Sembee.

Sembee

But yours was so nicely formatted....

Simon.

paadmin

ASKER

Thanks you both for your help, This forum is awesome, it has helped me so so much..

Now how do I award points :)

Does 250 each sound o.k. Simon was first bus a second opinion is alwasys welcomes (although I've never needed it with Simon)...

Yancey Landrum

Your call; I'm not here to amass huge amounts of points. I usually have no trouble getting the minimum needed to maintain my free account :)

In all fairness, Simon answered first, and also covered the PTR portion of your question, which I did not. All I did was basically say "Yeah, what he said!"

paadmin

ASKER

Hey ylandrum, thanks for being so gracious.. Simon gets the point with a great honorable mention to ylandrum :)

Thanks guys,
Liam