Cannot send mail to an Exchange account after v38.0.1

I set up an Exchange account in Thunderbird and used for years (since the v31.7.0 v3).

I just upgraded to v38.0.1 and although I can receive/download new emails, I can't send new emails: Thunderbird keeps asking me the password (which is registered and protected with password manager) although I correctly every time, Thunderbird seems unable to authenticate to the SMTP server.

I use port 465 on the SMTP Exchange Server, with NTLM as an authentication and STARTTLS method for the security of the connection. These are the settings that SMTP server used for years without recent change at all.

I just down to v31.7.0 and reinstalled my lightning v3.3.3 so module: without modification I can send emails once again, is clearly a problem of authentication in v38.0.1.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1174159

Tags: Thunderbird

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