Unable to receive External Email Exchange 2013

New Exchange server, migrated domains and everything from SBS 2003 to Server 2012 and Exchange 2013.

No user is able to receive external email,  I've verified that DNS on the exchange server points to the internal DNS server.  The internal DNS server points to itself, but has the correct forwarders.  Everything should work.

Site Setup:

2012 Server Running Hyper-V
Host has on it as a VM:  DC, Exchange, RDS servers.
THUMBTECHSAsked:
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Simon Butler (Sembee)ConsultantCommented:
Have you got Anonymous enabled on the Recieve connector?
What happens when you try to send an email from an external account?
Have you done a telnet test in to the server?

It is usually something pretty basic, such as getting the NAT/port forward wrong on the firewall/router!

Simon.
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THUMBTECHSAuthor Commented:
Let me check anonymous on receive, it should be there.  I haven't tried telnet and when we send, nothing happens...not even an NDR.

testexchangeconnectivity comes back clean, mxtoolbox says no PTR, which shouldn't cause it to not work.

Edit:  Telnet works just fine.  Can't email local either, so when I email "me@customer.com" from "me@customer.com" it doesn't work.
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Simon Butler (Sembee)ConsultantCommented:
Internal email should work straight out of the box.
Are all services running?
If you look in the queue viewer (it is the only thing in the "toolbox") does it show the messages at all?

Simon.
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THUMBTECHSAuthor Commented:
Sorry, the client is required to run DKIM as part of the DMERC qualifications and we had a package on there that may have been interfering with it.  We uninstalled it and we're testing again.
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Simon Butler (Sembee)ConsultantCommented:
Do you mean DMARC? If so, that doesn't require DKIM, you can use it with just SPF records. DKIM is really only a Yahoo thing and I haven't seen anything do it for Exchange 2013 yet (you can get a number of solutions for 2010).

Simon.
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THUMBTECHSAuthor Commented:
Simon,

I'm right there with ya regarding DMARC...I don't like it either but they're required to do it.  Its the only reason why we're putting in a physical Exchange server vs. putting them on O365.  Anyways, the issue was that when I was preparing the server on the bench, I set a static DNS lookup on the server inside exchange.   I forgot to remove that once I put the server onsite.  

So, something simple it was!
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THUMBTECHSAuthor Commented:
Got me thinking about simple stuff instead of the world beating, thanks for that!
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