Re: Exchange can't send email to one of the domains

From: Kevin Longley (kwlongley_at_cirtronics.com)
Date: 11/22/04 

Date: Mon, 22 Nov 2004 17:41:03 -0500

If you use Nslookup to verify the mx records of the domain in question, from
each of the exchange servers, what do you get for results?

"Boris Lokhvitsky" <msexpert@community.nospam> wrote in message
news:eVIhsLM0EHA.2572@tk2msftngp13.phx.gbl...
> Hello All,
>
> Here's a strange problem. There are two Exchange 2000 SP3 servers (on
> Windows 2000) hosting mailboxes, both belonging to the same organization,
> administrative group, and routing group. No SMTP or any other connectors
> configured. Virtual SMTP servers seem to be configured identically on both
> servers. Both servers use the same DNS servers for DNS resolution. Both
> servers (and DNS servers too) have private addresses and are behind a
> firewall/NAT. No SMTP proxies / gateways / smart hosts for the outgoing
> e-mail.
>
> Now the problem itself: _ONE_ of these servers can't send out e-mail
> messages to _ONE_ specific SMTP domain on the Internet. The mail just sits
> in the queue until its TTL expires. All other mail for other domains seems
> to work fine. Second Exchange server can send e-mail normally to all
> domains
> including the domain in question.
>
> On DNS server it can be seen that MX records for the domain in question
> appear in the cache when sending e-mail from the "good" server but not
> when
> sending e-mails from the "bad" server. Seems to be a DNS related issue
> (strange). However, messages sent to the same domain from the "bad" server
> using a command prompt Telnet session directly to SMTP, go through just
> fine. Hence - still an Exchange configuration issue?
>
> I'm out of ideas... any thoughts?
>
> Thanks a lot in advance,
> Boris
>
>

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