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dcarrion85's profile

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Tue, Jun 28, 2022 1:54 AM

New to AT&T - Need SMTP relay server address

I just switched to AT&T Fiber after 20+ years with Spectrum. I need to know the server hostname for the SMTP relay server on AT&T and I also assume that it's requires TLS on port 587

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ACE - Expert


29.3K Messages



port: 587

Encryption: Yes

Authentication: Yes (must either be oAuth2 complaint, or use a Secure Mail Key in place of the actual password)


Community Support


195K Messages


Happy to answer your questions about the SMTP server, dcarrion85!


The inbound server for SMTP is and the outbound port is 465 or 587. Visit our page that covers AT&T email server settings for more information. You'll find a chart of the bottom of the page that you can reference.


We hope this answers your questions! If you need help with anything else, we'll be here.


Aminah, AT&T Community Specialist

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