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user_xk697l
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Wednesday, November 12th, 2025 10:08 PM

blacklisted ip address

When accessing my comcast.net email account via Apple Mail, I get a message that my IP address has been temporarily blacklisted. How can I get it unblocked?

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18 days ago

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XfinityMarcus

Official Employee

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1.9K Messages

20 days ago

@user_xk697l thank you for using the Xfinity Community Forums page to reach out today regarding your concerns accessing your email. How long has this issue been prevalent for you?

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user_xk697l

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5 Messages

Hi.  It started about 2 days ago.

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20 days ago

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XfinityAmandaB

Official Employee

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2.8K Messages

Thank you, and are you still able to access your email directly when you go to https://www.xfinity.com/email?

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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20 days ago

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user_xk697l

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5 Messages

Yes.  I can also access using cellular data (via my hotspot).  Just not when using my ISP.

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20 days ago

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XfinityJohnG

Official Employee

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2.3K Messages

Thank you for the confirmation. If you are getting a blacklisted IP error you may need to reach out to the customer security team at the https://spa.xfinity.com/help site or call them directly at 1-888-565-4329.

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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20 days ago

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user_xk697l

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5 Messages

Somehow, someway this issue seems to have resolved itself.

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20 days ago

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user_766xeo

Visitor

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1 Message

20 days ago

How do you fix this problem? It’s been three days cannot get email.!

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XfinitySean

Official Employee

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314 Messages

Thanks for joining us in our community forums, user_766xeo! Sorry, you're having issues accessing your email! To confirm, are you receiving the same error message stating that your IP address is temporarily blacklisted? If so, are you able to access your email directly through the Xfinity website at https://www.xfinity.com/email?

 

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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18 days ago

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MichaelCA

Contributor

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262 Messages

18 days ago

I have been getting the same server error messages through Thunderbird for two separate Comcast email addresses. Windows 11.

I can see the emails logging directly into Xfinity, but getting the emails to show up in Thunderbird with the continuous error/warnings is hit-and-miss, mostly miss.

Because of the blocked IP flag sent from Comcast, Thunderbird has been asking me to re-enter in my Comcast email password. Doing so doesn't fix the problem.

Is this a known issue, or is Comcast blaming users (again!) for this issue?

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