Comcast Xfinity Email does not work over Quantum Fiber

@user_0d3c18 

I cannot send/receive Comcast email using Mozilla Thunderbird as a client over my Quantum Fiber connection. Except every once in a while it works. The fault clearly lies with Xfinity, and its inability to play nice with Quantum Fiber, as I can send/receive email from accounts with other domains, and I can send/receive comcast email over other devices, like my phone.

Does anyone have any idea for a work around Comcast/Xfinity's (typically) incompetent engineering?

What are your current settings in Thunderbird?

When was the last time you logged in to webmail?

Hello @user_0d3c18 as @Again hinted at this may be something that needs to be fixed in the Thunderbird settings. There is another thread on our forum that fixed this issue by adjusting the ipv6 settings in Thunderbird. 

Other thread with more information: https://forums.xfinity.com/conversations/email/thunderbird-will-not-connect-to-email-server-solved/602daf73c5375f08cd0c7e64