failed to authenticate on smtp server with username using 3 possible authenticators. authenticator login returned expected response code 235 but got code "535", with message "535-5.7.8 username and password not accepted.
code: 'er_not_supported_auth_mode', errno: 1251, sqlmessage: 'client does not support authentication protocol requested by server; consider upgrading mysql client', sqlstate: '08004', fatal: true