U

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3 Messages

Saturday, September 3rd, 2022 10:56 PM

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Cannot send e-mail. ESMTP server temporarily unavailble error

All of a sudden today I'm getting the following error message when trying to send an e-mail via Thunderbird:

resomta-a1p-077245.sys.comcast.net resomta-a1p-077245.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available.

I have seen this issue in the forums, but never a solution.  I have no other devices that are connected to this e-mail account.  I only use my desktop for sending/receiving e-mails through Comcast.  I can receive e-mails with no problems, just cannot send them.  All was fine until this afternoon.

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26.3K Messages

3 years ago

... resomta-a1p-077245.sys.comcast.net Excessive failed authentication, ESMTP server temporarily not available. ...

Please see https://forums.xfinity.com/conversations/email/cannot-send-email-0x800ccc0f-connection-to-server-interrupted-or-0x800ccc67-esmtp-server-temporarily-not-available-message/61b28270f06968168603033a?commentId=61b7a0b5f069681686037267 and the other messages in that topic.

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.

Visitor

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3 Messages

3 years ago

Thanks for your response, but as I said in my original post, I do not have any other devices that use the Comcast e-mail servers.  I only access e-mails using Thunderbird on my desktop.  I have done this for many, many years and never had a problem, but today the issue arose.

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828 Messages

If you are having an issue sending or receiving email, please visit:

https://comca.st/3RAfuZO.

I no longer work for Comcast.

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26.3K Messages

3 years ago

@XfinityDaryl wrote: If you are having an issue sending or receiving email, please visit:https://comca.st/3RAfuZO.

I see nothing there relevant to SMTP "Excessive failed authentication". Do you?

Please be aware that there are 2 kinds of responses in this Forum: Replies and Comments. When you Comment on a post by scrolling down to "Comment on this post here...", I am notified of your response. But if you select Reply, I am NOT notified and may not be aware of your response.

Visitor

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3 Messages

3 years ago

No, there was no information in there about the problem I'm having, which is still ongoing.  Everyday I get the same message until the evening when I'm able to send e-mails again.  Seems like it's overnight or early in the morning when the excessive login failures occur.  Since it's not any of my devices that could be doing it, I'm guessing someone is trying to hack the account, perhaps even spoofing my IP address.  Hopefully they'll eventually give up, but until then I guess I'm forced to use the webmail system.

Visitor

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2 Messages

@user_1aef7b​ 

I may have a solution for some. I have been having the same problem for the last few months. My new computer came with MS 365 but since I already have excel and Word I only used the email and did not want to pay for just email. I switched to Thunderbird and when my MS 365 expired is when I started having problems. Last week, after trying everything else mentioned in this forum, I finally decided to just uninstall MS 365. Since then I have not had any problems. No idea if they will return or not but I am happy for now.

Visitor

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2 Messages

Still no problems after a week. It seems that if you have Outlook and are not paying for the service anymore that that is the cause of the problem. For some reason, even if it is not running it still sends authentication messages to Comcast and causes the failure. Try deleting the program and see if that helps.

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