Remote Exchange Mail

Yesterday our domain name expired, I renewed it right away and everything in the office is working find.  Our remote sites get there email through an internet browser and their email is not working (they don't even get to the site).  I've checked with our domain provider and everything on their end is correct.  We are running Exchange 2003 on a Windows Server 2003 box.  All the exchange services are running that are usually running.  I have rebooted the server.
nplanekAsked:
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knwarrior74Commented:
Are your DNS entries still working.  You can use some of these sites to test your connectivity.  It may take a couple days for your DNS replication to occur.

https://www.testexchangeconnectivity.com/
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ThorinOCommented:
Can you do some checking here http://www.mxtoolbox.com/ are you able to do a lookup on the A record they are using to access OWA?
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knwarrior74Commented:
Forgot to post this site for you to query your MX records also.  Check it from locations that aren't getting mail.  You may also need to flush your DNS settings, reboot routers, switches at the sites having problems.

http://www.dnsright.com/
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nplanekAuthor Commented:
mxtoolbox recognizes the domain
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ThorinOCommented:
Are you able to do a nslookup against whatever domain they are using to access OWA? Have you done a WHOIS to verify that it has been renewed? The only reason OWA should have gone down is if the A record was removed due to being expired. It may (though doesn't seem likely) have died when it expired and got added back when it was renewed and is propagating.
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nplanekAuthor Commented:
From within the office we can go to the web site (mail.sollitt.com/exchange) with no problem.
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nplanekAuthor Commented:
This is the result from the WHOIS:
220 sollitt.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Tue, 4 Oct 2011 15:39:27 -0500

 OK - 66.252.66.43 resolves to mail.sollitt.com
 OK - Reverse DNS matches SMTP Banner
 0 seconds - Good on Connection time
Not an open relay.
 4.774 seconds - Good on Transaction time
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ThorinOCommented:
I did a quick check and everything looks good, I was able to get to it. I would suggest removing the actual domain from your post though if you can for security reasons.

Are your remote sites connected via VPN or are they all disconnected locations and using external DNS to resolve?
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ddiazpCommented:
What's the TTL on the dns records of the domain that expired?

After you renewed it, did you make sure the NS servers are still pointing to the right direction?

Chances are the problem will fix itself otherwise
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nplanekAuthor Commented:
Sorry, don't know what a TTL is.  I didn't verify the NS servers, I just took their word for it.
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ddiazpCommented:
Do these look correct to you?

sollitt.com     nameserver = ns39.worldnic.com
sollitt.com     nameserver = ns40.worldnic.com

These are the authoritative DNS servers for your domain sollitt.com.

Any DNS query will go there, they need to be able to resolve mail.sollitt.com.


TTL, is how long a DNS record can be cached before it expires and has to request it again from an authoritative source. If you have a large TTL, then other DNS servers will cache the old record so they won't see a difference until they expire.  If your remote office expired the dns record, they're attempting to get one from those 2 worldnic.com servers
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nplanekAuthor Commented:
Seems the problem resolved itself.
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