smtp problems

My outgoing email stopped working today on all 3 devices that I use for my comcast email. Incoming mail is working fine, but outgoing mail is saying that my user name or password is incorrect. I have not changed any of my settings, and double checked that they were all correct. Restarting does not help. I changed my password incase maybe my account was frozen due to a security breach or something. That did not help. I believe something is wrong on comcasts end, or with my account.

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XfinityDilary

Official Employee

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3.1K Messages

1 month ago

Thanks for posting on our community forums, gdfather13. I'm sorry to hear the outgoing mail stopped working. We'd like to help. Are you accessing the emails through a third-party email client? Do you have the same issue if you access the email through our Xfinity website? A good place to start would be HERE.

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user_ucp1yp

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2 Messages

The latest certificate from Comcast does not include smtp.comcast.net as a "subject alternative name". Comcast needs to fix this.

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1 month ago

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XfinityPaula

Official Employee

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1.9K Messages

Hello user_ucp1yp! Thank you for sharing the trouble with the certificate. I'm sorry that it's not updated. How are you accessing the email when you receive the certificate error? I would be happy to try to sort this out for us.

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29 days ago

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user_ucp1yp

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2 Messages

I think (but not sure) that the certificate issue is per-server, and Comcast maintains a lot of email servers. So on another machine in my house (which fortunately finds another server on connection attempt) my mail fetch is successful. But not on my primary desktop, which seems to have cached a connection to a particular endpoint at Comcast. I haven't figured out how to defeat that.

I've had so much trouble reliably getting email from Comcast that I'm in a transition year, shifting over to GMail while all my contacts adapt to my new GMail address instead of my comcast.net address.

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29 days ago

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XfinityPaula

Official Employee

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1.9K Messages

user_ucp1yp It sounds like the security certificate message that you may get depending on the browser setting where you can select to continue. Clearing the cache and cookies on the main computer could help out. What internet browser are you using on that computer?

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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29 days ago

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gdfather13

smtp problems

XfinityDilary

user_ucp1yp

XfinityPaula

user_ucp1yp

XfinityPaula

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