Sending of the message failed. The message could not be sent using Outgoing server (SMTP) smtp.googlemail.com for an unknown reason. Please verify that your Out
Nothing in Thunderbird has changed including the SMTP server. I did install the latest version of BitDefender (2017) and I'm suspicious, but BD is not scanning outgoing mail as far as I can tell.
I have tried everything suggested: I have disabled all addons, deleted the account and re-established it several times. This is an imap account with an app password (and I'm not getting a password rejected message).
Other gmail accounts work; this one (my MAIN gmail account) does not. I'm stumped.
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Thunderbird's safe mode or your OS's safe mode? Have you tried both?
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p.s. using TB 45.4.0 in safe mode. No joy
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Thunderbird's safe mode or your OS's safe mode? Have you tried both?
I solved it by completely uninstalling Thunderbird and reinstalling it. Works fine now. A bit annoying to have to re-establish all my address books and my 8 or so profiles, but at least it works.
So solved. Not sure how to mark it solved
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