Email Server Issue - Can't send emails from my Laptop

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Level 1

4 points

Email Server Issue - Can't send emails from my Laptop

Hello everyone, I have been having issues with sending emails from my laptop and phone. My desktop doesn't seem to be affected by the below error. I also can't seem to link my Comcast email to any devices. My log in credentials are correct and have even contacted Comcast support and did what they wanted me to do but nope.

So now it's my iCloud email on my phone and laptop. This is a bigger issue. I do work in VA and Louisiana and I use my laptop on a VPN at times too. However, I am home and on my normal network and I don't use a VPN at home. Can someone help me??

2025 MacBook Air and iPhone 16 OS are up to date. I even checked and restarted my network and modem etc. I use a ubiquiti system which I love.

Thank you!!

[Edited by Moderator]

MacBook Air 15″, macOS 15.5

Posted on Jul 23, 2025 3:31 PM

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Answer 1

Top-ranking reply

John Galt

Level 10

155,228 points

Jul 23, 2025 6:27 PM in response to cplank

If you can’t send or receive email on Mac - Apple Support

The gold standard for fixing those authentication problems is to delete the affected account(s), and add them again.

First delete:

Remove your email account

Then add:

Add your email account

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Answer 2

cplank Author

Level 1

4 points

Jul 28, 2025 3:14 PM in response to cplank

Fixed it. Deleting and re-adding them worked. Thanks again!!!

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Answer 3

cplank Author

Level 1

4 points

Jul 26, 2025 10:44 AM in response to John Galt

Ok....Sorry for late response. I just had this issue on my desktop yesterday. It's been a hectic few days. I was out of the house yesterday after the email wouldn't send and miraculously my comcast emails all showed up on my phone. It was so weird. I had like 18 unread emails at once. I came home and resent the email that didn't go through and it went through fine. So I am not sure what is going on but I will surely try your suggestion. I appreciate the reply.

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Answer 4

cplank Author

Level 1

4 points

Jul 28, 2025 2:30 PM in response to John Galt

Well....I'm about 200 miles from home and I can't send an email from my iCloud account...super annoying! I'm going to delete the account and try again. I disconnected from my VPN and I even connected to my phone which is on the Verizon network. Still getting that same error. So will see...I may need a new computer by the time I get done with trying to fix this. HAHAHA. Appreciate your help.

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Answer 5

John Galt

Level 10

155,228 points

Jul 28, 2025 10:18 AM in response to cplank

Glad it's fixed. In all likelihood it was probably a temporary Comcast affliction over which you had no control.

Sometimes it also helps just to turn off your devices, and turn them on again.

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