Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Mozilla サポートの検索

サポート詐欺に注意してください。 私たちはあなたに通話やショートメッセージの送信、個人情報の共有を求めることはありません。疑わしい行為を見つけたら「迷惑行為を報告」からご報告ください。

詳しく学ぶ

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

Thunderbird and Comcast

  • 1 件の返信
  • 0 人がこの問題に困っています
  • 173 回表示
  • 最後の返信者: david

landsurveyor
landsurveyor

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??

すべての返信 (1)

david
david
  • Top 10 Contributor

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.