RE: Combination Exchange/ISA issue. Help, please!!?! I'm stumped!!!

  • From: "Jeffrey Robillard" <jrobill@xxxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Tue, 22 Jan 2002 15:36:06 -0500

it could be that fedex is blocking you.  try calling fedex's IT department and 
resolving it with them.

-----Original Message-----
From: Ian Sterling [mailto:i_sterling@xxxxxxxxxxx]
Sent: Tuesday, January 22, 2002 3:34 PM
To: [ExchangeList]
Subject: [exchangelist] Combination Exchange/ISA issue. Help, please!!?!
I'm stumped!!!

OK, I'm stumped.  I am posting this to both the list and the list, so please excuse the cross-post, but I just haven't 
been able to determine where my main problem is coming from.  Any 
help/suggestions would be greatly appreciated.

I have Back Office Server 2000 on a multi-server setup.  I have 3 servers 
( & external = ISA; = SQL/PDC; = 
The PDC is also internal DNS (with a forwarder to our ISP's DNS set-up), 
DHCP, and the main file server.  All clients are running Outlook 2000 or XP. 
  My problem comes with trying to send mail to a specific external domain 
(user@xxxxxxxxx).  When sending mail to a contact in the domain, 
any user inside the network will receive an NDR and then a delay 
notification.  The Exchange manager shows that the messages are in the 
queue, but they show (Remote Delivery).  Eventually, a final NDR will be 
delivered to the sender of the e-mail, and the message times out.  
( seems to be the only domain I have had this issue with.) {Of 
course, I'm not blocking I'm aware of, at least.  The only 
things that are blocked using filters are message attachments (.exe, .ini, 
.scr, etc.) and known virus subject lines (I Love you, "Hi", etc).

I'm pretty sure that the internal servers are both working fine as Secure 
NAT clients, because I can fully access the internet from both servers using 
the standard allowed protocols.  However, I have noticed that I cannot do a 
NSLOOKUP from either internal machine.  The ISA server, of course, can do 
full NSLOOKUP without any problems.  (I installed DNS on it to see if maybe 
that was an issue, and the results are the same from the internal servers.) is the only domain that I can't send e-mail to, though, even with 
the NSLOOKUP issues.

Help!!!!! Can someone point me in the right direction here?  I thought all 
rules & protocol definitions were set up correctly (I even have a client set 
defined for the internal servers, and I've checked the protocol definitions 
and rules to no avail.)

Thank you for your help,

Ian Sterling

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