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Thunderbird 148.0 no longer connects to SMTP server

I have spent most of two days trying to Thunderbird to send email. It has worked perfectly for years. Suddenly, emails end up in Sent folder but go nowhere. My email host service sees nothing wrong. I can send emails through webmail and usually through Outlook. I have spent most of the day getting coached by Copilot and I am quite sure I have all the settings the way that worked flawlessly until two weeks ago. Is Thunderbird just dead and I need to go to Outlook?

I have spent most of two days trying to Thunderbird to send email. It has worked perfectly for years. Suddenly, emails end up in Sent folder but go nowhere. My email host service sees nothing wrong. I can send emails through webmail and usually through Outlook. I have spent most of the day getting coached by Copilot and I am quite sure I have all the settings the way that worked flawlessly until two weeks ago. Is Thunderbird just dead and I need to go to Outlook?

All Replies (3)

First, you have provided no details that allow someone to investigate this. I suggest posting a screenshot of the SMTP server settings pane, plus screenshot of any error message. Please also provide detail on what you mean by the messages being in Sent folder, yet going nowhere. Thank you. I do not mean to imply that I have the solution; I only mean that nobody can assist without more information. thank you

mailroom3.hostrocket.com port 465 STARTTLS Normal password User name clayton@claytoncramer.com

If I look in Sent, I see the message that I sent to myself, but it does not arrive in my inbox either in Thunderbird or webmail or Outlook.

Curiously, it does not send from Outlook either.

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