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

Avatar for Username

Search Support

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
Este fío arquivouse. Faga unha nova pregunta se precisa axuda.
Arquivado

Trouble sending email

Thunderbird Solución de problemas
Zenos replied
darquillo
darquillo

For the last few days, when I open Thunderbird email, I get the below error. The current operation on "Sent" did not succeed. The mail server for account d######### responded: Unrecognized command ID. Cannot send emails either, get and error box stating: Log-in failed, log-in to server: smtp.windstream.net failed. Can you help.

For the last few days, when I open Thunderbird email, I get the below error. The current operation on "Sent" did not succeed. The mail server for account d######### responded: Unrecognized command ID. Cannot send emails either, get and error box stating: Log-in failed, log-in to server: smtp.windstream.net failed. Can you help.

All Replies (1)

Zenos
Zenos

We have had another poster reporting issues with windstream.

https://support.mozilla.org/en-US/questions/1193677

Maybe this is a problem at windstream? Have you raised this with them?