Thunderbird-Fehlermeldung beim E-Mailversand nach Umstellung auf OAuth2. Abruf per IMAP klappt problemlos. Hatte schon mal jemand das Problem?
Win10, TB neueste Version 115.2.0
Vor Umstellung auf OAuth2 war es kein Problem.
Seems I could fix the issue but don't know if this is the right, orthodox way... In the extended settings of TB I searched 'smtp' and came across "mail.smtpserver.default.hello_argument" which was set to =[127.0.0.1] - cf error message above. After deleting this value TB could establish a connection and successfully send the email via smtp.gmail.com.