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Fri, Jul 3, 2020 12:16 AM

Unblocking port 25

I am running an email server on my network, but it requires port 25, however, port 25 is blocked by default, how do i fix this?


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Community Support


128K Messages

a month ago

We're here to help @ywkw1, with answering your question related to port 25.

Port 25 is blocked on residential accounts. Port 25 can only be unblocked for business accounts. Learn more about Broadband information.


Please let us know if that answers your question.

Charles, AT&T Community Specialist

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*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.

ACE - Scholar


463 Messages

That's not true. I called and had port 25 unblocked. 

Try the chat function on and ask if you can get the port unblocked.



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*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

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