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compdigit44

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Windows 2008 R2 Domain Login with Email Address

I just started at my company and trying to understand the following:

Our internal domain is: domain.company.com but our email address for our company is mail.company.com

Under ADUC, there is not an option for additional DNS suffixed for UPN login. With this in mind, how is it that users are able to log into the domain using there email address?

Nothing is listed under AD Domain and Trust as well...

There is no parent company.
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Mike Kline
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You can add the mail.company.com UPN suffix

http://support.microsoft.com/kb/243629

Then you can select that for your users in their account properties.

Thanks

Mike
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Will Szymkowski
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compdigit44

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Thanks...

I am just confused it users can log into our internal AD domain with their email address if the UPN / domain suffix is not an option under the UPN drop down in ADUC... This is why I am confused???