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user_dwp6fz
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Tuesday, July 2nd, 2024 3:29 PM

SMTP Server won't connect

I use Thunderbird for email access. Today it stopped sending emails, with the following message:

Sending of the message failed.
The message could not be sent because connecting to Outgoing server (SMTP) Comcast failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

I went to the Xfinity webmail site and it required me to change my password. Did that, changed it in Thunderbird, still same failure.

 Webmail interface works just fine.

Help?

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1 day ago

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XfinityJosephA

Official Employee

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1.4K Messages

5 months ago

Hello, @user_dwp6fz how are you? Thanks for your post and for testing Comcast webmail. It seems like after troubleshooting and resetting your password that webmail is not the issue. The next best step to take is to check your settings and potentially set up the email again in Thunderbird. Resetting your device and making sure your mail client has the newest updates is also recommended. Here is a link that will confirm settings and how to configure Thunderbird. 

 

https://www.xfinity.com/support/articles/setting-up-thunderbird?view=app

 

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prschoef

Frequent Visitor

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12 Messages

SMTP error No article sited/shown addresses this problem.

Sending of the message failed.
An error occurred while sending mail. Outgoing server (SMTP) error. The server responded: resomta c2p-555440.sys.comcast.netresompta-c2p-555440.sys.comcast.net. Excessive failed authentication. ESMPT server temporarily not available.



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29 days ago

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prschoef

Frequent Visitor

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12 Messages

What comment -- what reply?

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29 days ago

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prschoef

Frequent Visitor

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12 Messages

I have used comcast.net email on Thunderbird for about ten years. In the last 4 or 5 months Xfinity sends me the error message & cuts me off. I know about the tird party check and have replaced passwords more often than I can count. No article or advice proffered has been of any help

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29 days ago

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XfinityDemitrius

Official Employee

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1.3K Messages

Hey @prschoef, Thank you for visiting our official Xfinity Forums Community support page. We greatly appreciate you taking the time to share your experience regarding the Xfinity Email on Thunderbird. I would be more than happy to offer my assistance looking into this further for you.

 

We do have limited support for third-party programs and do recommend using the main Xfinity Email web portal. Have you attempted to deleted your Xfinity Email profile within Thunderbird and re-add using the steps that were provided in previous comments?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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27 days ago

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user_aomear

1 Message

I'm not using Thunderbird (whatever that is), but I still can't get the smtp server to connect on my Iphone.  I changed that password on the Xfinity site, but to no avail. Help.

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3 days ago

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