Exchange 2013 - Email address Policy

HI Experts.

I've just added another domain to our Exchange server.

I've noticed that the original Default Email address policy is set as
TYPE: SMTP, ADDRESS FORMAT: @internalDomain.local

I've setup another email address in the default Policy as suggested by the dialog box.
TYPE: smtp, ADDRESS FORMAT: alias@ExternalDomain.co.uk

Default Policy
email format done by Exchange on setupNew domain

So, should I used alias@domain or just @domain?

Whats the difference?!

Many thanks
John
John sparksAsked:
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Jeff GloverSr. Systems AdministratorCommented:
Do the usernames in AD (the SAMAccountName) match the names in email? I.E. jsmith or john.smith? Using alias@domain makes that SMTP address just that. The default policy, even though it says @domain really is actually alias@domain. It just doesn't show it that way.
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John sparksAuthor Commented:
yep the usernames match the names in email.

OK, so a format of @domain is the same as alias@domain.

Yes?
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Jeff GloverSr. Systems AdministratorCommented:
yes
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John sparksAuthor Commented:
Thanks for the info.  Much appreciated.
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