cp71's profile

Visitor

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3 Messages

Sunday, October 12th, 2025

smtp.comcast.net - unable to send emails

I've had issues with connecting to smtp.comcast.net on my Apple phone (iphone 16) all day. Nothing has changed except I'm constantly getting popups requesting the password, which is correct, and is not working for logging in. I can log in online to xfinity email. when attempting to send through the Apple mail app and through my iMac mail app. I changed my password and that didn't help. I'm connected to port 587, host name smtp.comcast.net, SSL is enabled, authentication is "password".   I attempted to ping smtp.comcast.net but I get a request timeout. When I attempt to ping google's smtp server, no issue. 

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Gold Problem Solver

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26.8K Messages

3 days ago

... attempted to ping smtp.comcast.net but I get a request timeout ...

"smtp.comcast.net" doesn't respond to ping, you have to use telnet (2xx lines are server responses):

telnet smtp.comcast.net 587

        220 resomta-a2p-647974.sys.comcast.net resomta-a2p-647974.sys.comcast.net ESMTP server ready

help
        214-2.0.0 This is resomta-a2p-647974.sys.comcast.net ESMTP service help
        214-2.0.0 To contact postmaster send email to postmaster@comcast.net.
        214-2.0.0 For local information send email to Postmaster at your site.
        214 2.0.0 end of HELP info
quit
        221 2.0.0 resomta-a2p-647974.sys.comcast.net resomta-a2p-647974.sys.comcast.net closing connection

        Connection to host lost.

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Visitor

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3 Messages

3 days ago

Rebooted the Xfi gateway and everything seemed to straighten out. After having xfinity for 19 years, this is the first time I've had email issues. 

Official Employee

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151 Messages

1 day ago

 

@cp71, I totally understand! Thanks for reaching out. @BruceW Thank you so much for providing that amazing solution to helping correct this concern! 

 

Visitor

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3 Messages

@BruceW didn't provide a solution. He just brought to light that you cannot ping smtp.comcast.net without telnet. 

Official Employee

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151 Messages

 

cp71, I understand. I saw you commented after their comment stating things straightened out. I followed the thread down. Were you able to get your problem resolved? 

 

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