osTicket Version v1.11 (d4e240b) — Up to date
Web Server Software Apache2.4
MySQL Version 5.7.18
PHP Version 7.1.27
We have the email ID in Gmail with 2 factor authentication. I generated Google App Password and used in OSticket. IMAP (email fetching) is working fine. But SMTP is not working, below is the error. Please suggest at the earliest.