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IMAP email trying to resolve to local .com AD server.

I have a problem. I've installed a new 2012 server with Active directory, DNS and file server. I did a migration from server 2003 to server 2012 to be more precise. Now I have a email problem.

One client computer is trying to access email via IMAP but cannot due to it trying to resolve to the local .com (which is the same domain name as there website. e.g mydomain.com for both the hosted website and the local server.) server instead of going out to the internet. Is there an easy way to make DNS forward this out? I've never really worked with DNS before. I know what it does but never done anything like this before.

Can anyone help me?
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GregDSelwah
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GregDSelwah
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DMTechGrooupCommented:
Do you have multiple clients on this server or just the one?

What exactly is the way the IMAP server is looking for? something like www.domain.com or imap.domain.com etc?

How many machines connecting to the mail?

Who handles the external DNS?
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GregDSelwahAuthor Commented:
Have about 15 windows 8/7 machines conecting to the server. All other accounts are on POP3 account except this one account which is using IMAP. Yeah the Imap is looking for mail.mydomain.com. The server happens to have the same name: mydomain.com so when I ping that name the ip address that comes up is the local ip address of the server NOT an external IMAP email hosting that is external from the LAN.

All other machines are pop3 accounts that are getting their mail from mail.megamailservers.com and there is no issue with those accounts accessing those servers.

External DNS is handled by their ISP I believe. Intermal DNS is hosted by their 2012 server. I need to basically forward the local domain name of the DC to the external address. Maybe It would be easier to just set up a pop email for this client computer. It was never explained to me why this was the only machine with a IMAP account.
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DMTechGrooupCommented:
IMAP is much better than POP.. it is more exchange like..

I guess a quick fix would be to setup a A record on your internal DNS and call it IMAP and then set the IP address to the external mail.domainname.com as it's IP.. then on the client machien change mail.domainname.com to imap.domainname.com .. it will look at your internal DNS and send it to the external host.
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GregDSelwahAuthor Commented:
I actually edited the host record on the local machine to point to the ip address of the web host they are using for their website. Thank you for your help I appreciate it.
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