Re: Exch5.5sp4 w/ISA outgoing smtp timeout problem...

  • From: "Ian Sterling" <i_sterling@xxxxxxxxxxx>
  • To: isalist@xxxxxxxxxxxxx
  • Date: Thu, 31 Jan 2002 14:41:39 -0600

have you checked the smtp queues in the Exchange System Manager? I have a very similar problem but so far, only to one domain. I noticed in mine, that anything sent to fedex.com shows the queue in the SA but it has (Remote Delivery) next to the queue and the mail is never received.

When doing an NSLOOKUP from my exchange server, I get the following results

Non-authoritative answer:
fedex.com       MX preference = 100, mail exchanger = mapper.mail.fedex.co
fedex.com       MX preference = 200, mail exchanger = smtp.zmd.fedex.com
fedex.com       MX preference = 300, mail exchanger = smtp.dmz.fedex.com

However, when trying to telnet to either the 100 or 200 preference machines on port 25, I am immediately greeted by:
Connection to host lost. I can successfully connect via telnet to the 300 preference, though and can send mail without a hitch.

Anyone got any suggestions? I've been working on this issue for 2 weeks now, and it wouldn't be that big a deal, but fedex is the largest company in our city, and they are a big customer. E-mail to them is absolutely essential.

Thanks,


Ian Sterling
Systems Administrator
Business Equipment Center, Inc.
isterling@xxxxxxxxxxxxxxx




From: <isa@xxxxxxxxxxxxxxxxx>

We had to re-install a client's ISA over the weekend. We used their
GHOSTed W2K Server install, plus a run of the ISA installer without
message filtering in integrated mode and then used a Restore of the
config. We then used Windows Update to bring the bits of W2K up-to-date.

Now we get a weird problem from the published Exchange 5.5sp4 server
which was not altered. It sits on 192.168.0.10, with an ISA Secure Mail
Server rule accepting incoming SMTP on the external NIC to the Exchange
machines IP. The usual rules are created, including SMTP/SMTPS outgoing.


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