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Thunderbird does not recognize e-mail provider's settings as valid.

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harold4
harold4
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I am trying to configure Thunderbird 91. See attached graphic "Configuration in T-Bird 91 - Password Not Shown.jpg". Every entry on that page is correct. I have verified those entries with my e-mail provider. Yet, the "done button" is greyed - T-Bird for some reason does not like those entries.

The second graphic, Configuration in T-Bird 91 - Error Message.jpg" is the error message T-Bird gives me when I try to force it to accept my data.

The third graphic, "Sending Myself a Test Message - Error Message.jpg" is the error message I get when I try to send an e-mail to myself.

T-Bird is trying to tell me that my use name is my full e-mail address. That is wrong. My user name for this e-mail provider is simply my first name.

Suggestions, please.

I am trying to configure Thunderbird 91. See attached graphic "Configuration in T-Bird 91 - Password Not Shown.jpg". Every entry on that page is correct. I have verified those entries with my e-mail provider. Yet, the "done button" is greyed - T-Bird for some reason does not like those entries. The second graphic, Configuration in T-Bird 91 - Error Message.jpg" is the error message T-Bird gives me when I try to force it to accept my data. The third graphic, "Sending Myself a Test Message - Error Message.jpg" is the error message I get when I try to send an e-mail to myself. T-Bird is trying to tell me that my use name is my full e-mail address. That is wrong. My user name for this e-mail provider is simply my first name. Suggestions, please.
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sfhowes
sfhowes
  • Top 10 Contributor
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The 'peer using unsupported version' error is due to the mail server not supporting the version of TLS required by TB 78. By changing a preference, the version on the server can be accepted by TB:

https://support.mozilla.org/en-US/questions/1295861

https://support.mozilla.org/en-US/kb/thunderbird-78-faq#w_after-upgrading-to-thunderbird-78-i-cannot-receive-or-send-email-messages