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Sending through office365 SMTL using 115.8.1 unreliable

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  • Last reply by Mike Stiege

Mike Stiege
Mike Stiege
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After upgrading to 115.8.1 , Tbird will only send immediately after startup, otherwise I get the choice to Save (draft) or abandon.

I have tried changing the various TLS options, and now continue to use the ones that have always historically worked.

What is causing this. Rather inconvenient

After upgrading to 115.8.1 , Tbird will only send immediately after startup, otherwise I get the choice to Save (draft) or abandon. I have tried changing the various TLS options, and now continue to use the ones that have always historically worked. What is causing this. Rather inconvenient
Attached screenshots

Modified by Wayne Mery

All Replies (2)

Wayne Mery
Wayne Mery
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As best as I can tell, nothing changed in 115.8.1 that would have affected sending of messages. The bug list is https://mzl.la/3ThIBUj

Are you still having a problem?

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Mike Stiege
Mike Stiege Question owner
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Problem remains as yet. Strangest thing though.

Main mail service provider is IMAP and SMP Usually, not always, when I attempt a send or reply, it just sits as thought it was hanging..-then when I go to exit from the send I get the option to save (to Drafts) which I do,

The if I exit and after loading Thunderbird again, there is no problem sending the saved draft. All this of course without changing any of the SMTP settings. Iget the same behaviour from my POP providers/


I get this almost always now.

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