Configure SMTP connection for my Exchange 2010 server

Hello,

I know this should be super simple but how do I configure an SMTP connection to use with my internal Exchange 2010 server?
I have an App that requires SMTP.domain.com only.

Is it a situation where I need a public DNS called smtp.domain.com or is this something I need to do in Exchange?
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Michael MachieIT SupervisorAsked:
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DMTechGrooupCommented:
Seems like you could just use a A record with the IP or a CNAME record to alias the actual MX record name.  Or even a CNAME internally for smtp.internalname.com.

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Michael MachieIT SupervisorAuthor Commented:
Awesome. I created an A record on my internal DNS that is now allowing communication internally via ping.

The App is still not working so am going to create a public dns name with my ISP and see if that helps.

Update to follow.
Michael MachieIT SupervisorAuthor Commented:
Alrighty, all set! Internal DNS entry (smtp.domain.com) as well as a Public DNS entry with smtp.domain.com pointing to my Public IP.

Did the trick! Didn't even need to alter Exchange in any way which is even better. Thanks for the advice.
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