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Tue, Aug 30, 2016 6:44 PM

Does AT&T Business Fiber block port 25? We host our own email server and need it open

We are considering AT&T business fiber but need to know if certain ports such as port 25 are open. We have our own email server thus would need certain ports open for that


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Community Support


136.2K Messages

4 years ago

Hi @bw8301,


For business accounts, port 25 is opened. If and when you order, our teams will be able to open it for you. Any issues, you can always to come to us on the forums. 



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New Member


2 Messages

I have already order the service. I am hosting exchange server, my email are not going out...

New Member


2 Messages

How do I get this unblocked?

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