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osTicket v1.10 (stable) and Maintenance Release v1.9.15 are now available! Go get it now

authentication failure [SMTP: Invalid response code received from server (code: 534 response: 5.7.14

Google have to allow your app to use your own account, to allow this google provided an easy way, just go to https://accounts.google.com/DisplayUnlockCaptcha, then click continue, then with 10 min, use your application to try to send email again, and google will remember the application/service and allow your application to access your account as long as you don't change your password.
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