External Mail stopped

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Guest

Our network comprises 2 servers, both Windows 2000 (1 with Web site and SQL Server Apps and the other Exchange) and several PC's. About 10 days ago the SQL one died. It was the primary domain controller. A temporary one was rebuilt and given a new IP. Once the old one was forcably removed as a domain controller all was back to normal with mail working

After 10 days or so external mail both in and out began to not be sent or received, first intermitantly then totally. Another feature in some mail was delivered twice. Internal mail is fine. There is nothing obvious in the event logs or in Outlook.

I suspect the 2 are related as nothing else has changed

Thanks in advance to anyone with any ideas.
 
First, it's nice to see someone using the word "comprise" correctly. ;-)

Did you sieze the FSMO roles from the old DC, assuming it held them? Set up
the new DC as a global catalog server?

What is handling Internet mail - are you hosting your domain's mail on
Exchange using SMTP? You may need to turn up SMTP logging in Exchange.
 
Thanks for the reply, I am still in need of help

How else do you use comprise? That's what we say here in Australia

Yes, I seized the FSMO roles from the old DC. I also promoted the new temporary serverto be a secondary domain controller so I still have a backup. The new server has a new IP and the old one doesn't exist any more

Could it be that up until now something from the old server was persisting in a cache and this has now expired? All of the PCs have a DNS pointing to the old non-existant PC and the alternate pointing to the mail server (i.e. unchanged) but this should be OK. The mail settings points to the mail server which should be OK

The router mapped port 80 to the old IP. This has been changed to the new temporary server IP. Port 25 is unchanged and still maps to the mail server

Does any of this provide a clue

Once again thank

Dean
 
Dean said:
Thanks for the reply, I am still in need of help!

How else do you use comprise? That's what we say here in Australia.
Click to expand...

People usually misuse it - say "the X is comprised of Y" (composed would
make more sense there)
Yes, I seized the FSMO roles from the old DC. I also promoted the new
temporary serverto be a secondary domain controller so I still have a
backup. The new server has a new IP and the old one doesn't exist any
more.
Click to expand...

The new server is a GC?
Did you see:
HOW TO Remove Data in Active Directory After an Unsuccessful Domain
Controller Demotion Q216498:
http://support.microsoft.com/?id=216498
and
216364 - Domain Controller Server Object Not Be Removed After Demotion [ADUC
or NTDSUTIL]:
http://support.microsoft.com/?id=216364
Could it be that up until now something from the old server was
persisting in a cache and this has now expired? All of the PCs have a
DNS pointing to the old non-existant PC
Click to expand...

Change this - point all servers and workstations only at the working
AD-integrated DNS server's IP.


and the alternate pointing to
the mail server (i.e. unchanged) but this should be OK. The mail
settings points to the mail server which should be OK.
Click to expand...

But that's external, right? So not relevant....I presume you weren't/aren't
hosting your own public DNS
The router mapped port 80 to the old IP. This has been changed to the
new temporary server IP. Port 25 is unchanged and still maps to the
mail server.

Does any of this provide a clue?
Click to expand...

Can you telnet to your Exchange server from outside your network on port 25?
I suspect DNS on your Exchange server is funky.
 
I telnet and ge

220 mail.ttw.com.au Microsoft ESMTP MAIL Service, Version: 5.0.2195.5329 ready
t Mon, 15 Mar 2004 07:14:50 +1100

This seems O

Dean
 
Back at work Monday and all seeems OK again. Backlogged items from Friday came through on Sunday. All a bit of a mystery but hopefully has gone away for good

Thanks for your help

Dean
 
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