OK I am stumped I have a customer who insists on running his Imail system
behind MS ISA Server(despite my opinion of it).

The customer is is a large company spread across the US. I currently have 3
Imail systems running as peers for their domain, they use public IPs. I am
trying to add a 4th peer (the one behind the ISA server)

Here's the deal.
I can telnet on port 25 to both the external IP and the DNS name just fine

I can send mail to it directly to [EMAIL PROTECTED] and it gets
delivered to the intedended mailbox

If I send it to [EMAIL PROTECTED] it goes to the primary peer here in
Cleveland and then is correctly sent to azmail.example.com in Arizona. BUT
it sits in the queue unable to be delivered and eventualy is kicked back to
me saying:

Delivery failed 20 attempts: [EMAIL PROTECTED]

xxx.xxx.xxx.xxx = external IP

BTW - They are also running MS DNS on the same box as Imail

Everything is fine until Imail attemps to deliver the message locally. So
the question is why cant Imail deliver a message for a user it knows is on
the system?

My guess is that it is trying to connect back to the external IP address
which it believes to be itself.

I have tried several different entries in the host file to no avail.

Aside from the obvious comments about MS ISA Server, does anyone have any
suggestions how to fix this?

Is anyone else running Imail Peering behind MS ISA Server?

Any help is appreciated!

Have a great day!
Rick Davidson
Buckeye Internet Inc.
www.buckeyeweb.com
440-953-1900 ext 222
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