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Thunderbird will not allow me to send mail. So I can no longer use Thunderbird.

  • 1 reply
  • 1 has this problem
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  • Last reply by sfhowes

gridsleep
gridsleep
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Thunderbird will not allow me to send mail. See the attached error message. I am going back to using my Optimum email web page for email. Thunderbird is just useless in the face of such an all encompassing error, and I am really not in the mood to screw around with it. Thanks, but no thanks.

Thunderbird will not allow me to send mail. See the attached error message. I am going back to using my Optimum email web page for email. Thunderbird is just useless in the face of such an all encompassing error, and I am really not in the mood to screw around with it. Thanks, but no thanks.
Attached screenshots

Modified by Wayne Mery

All Replies (1)

sfhowes
sfhowes
  • Top 10 Contributor
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The error says the authentication setting in TB is incorrect. Optimum recommends these settings:

mail.optimum.net on port 465, SSL/TLS security, authentication = normal password, User Name = part of address before @.

Tools/Account Settings, Outgoing Server (SMTP) at the bottom of the left pane.

https://faq.optimum.net/node/7327