Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

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Mij stipescams. Wy sille jo nea freegje in telefoannûmer te beljen, der in sms nei ta te stjoeren of persoanlike gegevens te dielen. Meld fertochte aktiviteit mei de opsje ‘Misbrûk melde’.

Mear ynfo

Dizze konversaasje is argivearre. Stel in nije fraach as jo help nedich hawwe.

Luke: Thunderbird 3 not sending my emails!

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  • Lêste antwurd fan Chris Ilias

Sending of message failed. An error occurred sending mail: Unable to authenticate to SMTP server smtp.east.cox.net. It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider.

Troubleshooting information

Sending of message failed. An error occurred sending mail: Unable to authenticate to SMTP server smtp.east.cox.net. It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider.

Sending of message failed. An error occurred sending mail: Unable to authenticate to SMTP server smtp.east.cox.net. It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider. == Troubleshooting information == Sending of message failed. An error occurred sending mail: Unable to authenticate to SMTP server smtp.east.cox.net. It does not support authentication (SMTP-AUTH) but you have chosen to use authentication. Uncheck 'Use name and password' for that server or contact your service provider.

Alle antwurden (2)

This forum is for Firefox support, not Thunderbird support. The best place to go would be http://www.mozillamessaging.com/en-US/support/

I have moved from outlook to thunderbird it imported and finished correctly i can not send mails to any of my contacts can u guys please help