SBS 2011 Exchange will not send outside mail

I have run into a few problems over the last few years all end up being silly little things that either I have accidently changed or a config change created. This one has me stumped. Currently my server will send internal mail as normal, but outside outgoing mail sits in the que and will not go out. I first thought DNS, nope. then maybe connection, nope. I am very frusterated and cannot figure out why mail will not go out. I recently moved the server and the connection provider is different other than that nothing has changed.
bhoubenAsked:
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bhoubenAuthor Commented:
I guess I should give some more info since I have it. In the message que it has the delayed messages marked with DnsConnectorDelivery. which has pointed me towards DNS, but I cannot see any DNS issues. I am not an expert by any means, so if someone could walk me through what I need for DNS entries for exchange to send properly and I could confirm...
bhoubenAuthor Commented:
It must be my new connection provider blocking it somehow (I called and checked and they said they do not), so I configured the smart host relay and all is working now. Only took a week to think of that.... uggg.

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Cris HannaSr IT Support EngineerCommented:
Are you still looking for help with this?
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
You can use telnet to test SMTP outbound:

Start --> Telnet
Open SMTP.ispdomain.com 25

If that works then try an inbound for Outlook.com (DIG DNS MX for that).
If this test fails then they are actively blocking port 25 outbound.
bhoubenAuthor Commented:
Figured out my own problem.
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