My mail server was facing some error, past few months it works properly from yesterday it was not working when clicking a test connection button following error was showing. i am also changed the mail id too but it was also showing the same error.
Connection Test Failed! Here is what we got instead:
encoding with 'idna' codec failed (UnicodeError: label too long)
Please can u show us the configuration and picture ?
Regards !
priority: 10, smtp server: smtp.gmail.com, Smtp port: 465, Debugging marked, connection security: SSL/TLS, Gmail username, password