This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

ابحث في الدعم

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Thunderbird and Comcast

  • 1 (رد واحد)
  • 0 have this problem
  • 1 view
  • آخر ردّ كتبه david

landsurveyor
landsurveyor
more options

For the last few days. I am unable to send emails from Thunderbird. I can receive but I get an error:

Sending of the message failed. An error occurred while sending mail. The mail server responded: Please ensure your email address and authenticating user match when sending messages. Please verify that your email address is correct in your account settings and try again.

I receive emails fine and can send from my phone etc??

For the last few days. I am unable to send emails from Thunderbird. I can receive but I get an error: Sending of the message failed. An error occurred while sending mail. The mail server responded: Please ensure your email address and authenticating user match when sending messages. Please verify that your email address is correct in your account settings and try again. I receive emails fine and can send from my phone etc??

All Replies (1)

david
david
  • Top 10 Contributor
more options

Please post a screenshot of in your incoming server settings and also one of your SMTP server settings. That may help. If there are multiple comcast accounts, please post screenshots of all of them.