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5 Messages

Monday, February 5th, 2024 9:19 PM

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comcast email send failure

I use Thunderbird 115.7.0 with Windows 7. I have two Comcast email accounts. Both can receive email; neither can send email. My gmail account on Thunderbird works fine. When I try to send, I receive the message, "Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) smtp.comcast.net. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'." I have checked Thunderbird's saved passwords and the password I enter is correct. Settings are: Server Type = Imap; Server Name = imap.comcast.net; Port 993; Connection Security SSL/TLS; Authentication method = normal password; Outgoing Server = Comcast smtp.comcast.net (default); Port = 465; SSL/TLS; Normal Password. Comcast customer service has been of no help. They have twice promised to call back in an hour and I never heard from them. I have tried changing authentication methods, changed the password, had Thunderbird create a new account, moved my records to it, and removed the old account -- all to no avail. I don't know what caused this problem about a month ago and have no idea how to fix it. Any ideas would be appreciated.

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9 months ago

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user_5aa60a

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5 Messages

10 months ago

UPDATE from original poster 5aa60a. I examined my Thunderbird profile and found 4 Comcast IMAP folders. I have only 2 Comcast email addresses. Under Profiles/[weird numbers and letters]/ImapMail, there appears

imap.comcast.net

imap.comcast.net-1

imap.comcast.net-2

imap.comcast.net-3

Could this be the problem?

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XfinityTony

Official Employee

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1K Messages

@user_5aa60a, hello! Thank you for taking the time to post on our Email board. I am sorry to hear that you are having issues with outgoing mail. That definitely makes things difficult! Can you try changing the port to 587? Let's see if there is something going on with that port.

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

10 months ago

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XfinityAlex

Official Employee

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881 Messages

@user_5aa60a Could you send me a DM with your username?  I'd like to check our detailed logs for a possible cause.  Thanks

10 months ago

0

user_5aa60a

Visitor

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5 Messages

@XfinityTony​ Changing to port 587 does not affect the problem. I receive the same "Sending of message failed."

10 months ago

0

user_5aa60a

Visitor

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5 Messages

@XfinityAlex​ I believe a DM has to do with telephone text. Not sure. Anyway, I am so old school I don't have a modern phone, just a landline. If you tell me how to send you a DM via email or some other method, I will be happy to do so.

10 months ago

0

XfinityGabriel

Official Employee

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1.9K Messages

No problem, user_5aa60a! You can send us a direct message with your first/last name and full address by clicking the "direct message" icon on the upper right page of the forum page. Once you click on that, input our shared handle "Xfinity Support" to send us a direct message. If you're signed in to your forums profile and because you have already posted to the public page, you should have the option to do so.

 

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

10 months ago

0

user_5aa60a

Visitor

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5 Messages

9 months ago

I have now eliminated comcast-1.net and comcast-2.net. The profile IMAP MAIL account is imap.comcast.net. When I open my email account at the Xfinity website, my password is recognized and all my emails are downloaded. But when I use the same password on Thunderbird, I am told the login has failed. I have checked the stored passwords under Thunderbird Settings and it is correct. What’s going wrong?
Other info: I am using TB115.7,0 with Windows 7. Outgoing Server is smtp.Comcast.net. Port 465, SSL/TLS, Normal Password. Imap.comcast.net, Port 993, SSL/TLS, Normal Password. Allow third party access box is checked.

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XfinityAlex

Official Employee

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881 Messages

@user_5aa60a​ I'm going to pass this to another person to look at, but the version of Thunderbird you have should allow for OAUTH as an option for authentication.  Could be worth trying.

9 months ago

0

XfinityOrlandoM

Official Employee

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1.4K Messages

@user_5aa60a

This link https://www.xfinity.com/support/articles/third-party-email-access has great information on accessing your Xfinity email through third party  programs

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

9 months ago

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