What is normal Exchange 2010 Receive Connector setup for UTM?

How should your receive connector be setup in Exchange 2010 for typical UTM 9 deployment?

See 4 pictures attached.

Is that best practice and correct?

only port 25 or should I add 587?

should the HELO response be my internal name or external MX name?

what about auth and permission groups?

Attached Images

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