Emails receiving errors

Wasana

osTicket version - v1.18.1 (0375576)
Web server software - Apache
MySQL version - 8.0.34
PHP version - 8.2.15

We have identified an issue regarding the receipt of emails related to ticket submissions from email addresses outside of our domain. When a ticket is submitted using an email from our domain, we are able to receive emails related to that specific ticket. However, when a ticket is submitted using an email adddress that is not within our domain, we are unable to receive emails related to that ticket.
I have attached a screenshot of the system log with error messages.
Could you please give me a support to solve that problem
Thank You.

Jsezze

Hello, did you use the OAuth2.0 Plugin for the osTicket email service?

ntozier

That error basically says
"hey you tried to connect to send email... you didnt issue a STARTTLS command... so we will not talk to you. Here is a useful link that might provide more information".

Can you provide a screen shot showing the settings that you have in the email configured in osTicket?