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Install of Exchange 2010 external domain?

I am installing Exchange 2010 for the first time on a 2008 R2 Server to replace a legacy install of 2003 SBS (which was installed before I joined the company).

The 2008 R2 install has a FQDN formatted as mydomain.local.
Our web hosting is via a third party server (and we have control over subdomains etc)

During the install of Exchange 2010 I am asked for a Client Acces Server Domain name.

Currently to access the Webmail and associated services on our 2003 box you have to type the ip address followed by /exchange

Can I simply use something like mail.mydomain.com for the exchange external domain and create a subdomain in the DNS of my web server to point to it?

I am looking for confirmation that I will not be creating a conflicting entry with AD and that I am not backing myself into a corner :)
1 Solution
Hendrik WieseCommented:
Yes you can use the mail.yourdomain.com and create the external DNS for it. Also remember that you would have to include this in your UCC SSL Certificate. (also remember to include autodiscover.yourdomain.com and SERVERNAME when you buy it)

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