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

Avatar for Username

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊，或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多
此討論串已被封存。 如果您有需要幫助，請新增一個新問題
封存

Thunderbird Error Message

Thunderbird 其他
drawohna replied
drawohna
drawohna

I have been using Thunderbird for many years. In Thunderbird I found this message: "Login to server inbound att.net (username) failed." When I tried to send an email I got this message: "Sending of the message failed: Unable to authenticate the Outgoing Server (SMTP) outbound att.net. Please check the password and verify the "Authentication method" in "Account Settings." [outgoing server (SMTP)]

I went to att.net and I am still receiving emails. In fact, I received an email from Mozilla Support that allowed me to sign into Mozilla Support.

Please help so I can send outgoing emails from Thunderbird.

Thank you

I have been using Thunderbird for many years. In Thunderbird I found this message: "Login to server inbound att.net (username) failed." When I tried to send an email I got this message: "Sending of the message failed: Unable to authenticate the Outgoing Server (SMTP) outbound att.net. Please check the password and verify the "Authentication method" in "Account Settings." [outgoing server (SMTP)] I went to att.net and I am still receiving emails. In fact, I received an email from Mozilla Support that allowed me to sign into Mozilla Support. Please help so I can send outgoing emails from Thunderbird. Thank you

所有回覆 (2)

Matt
Matt
  • Top 25 Contributor

are you using the mailkey instead of your password as required by ATT?

drawohna
drawohna 提出問題者

Hi Matt,

After you asked me if I used the password as required by ATT I replied that I did use the password. I don't know if you received my reply but I haven't got an error message since. Does that mean you solved my problem? If so, thank you.

Howard