SMTP Resend on temporary error

BrianC

osTicket 1.15.2 on IIS 10 with php 7.3.13.
I am using smtp.gmail.com:587 to send emails.

I noticed some mailer errors in the system logs. Sometimes the error is 'Invalid response code received from server' or 'Mail server temporarily rejected message', 'Temporary system error, try again later' etc. 99.9% of emails have no problem sending so I presume these are all transient errors at the Google end.

However, the email that was being sent at the time of the error is never sent. Does osTicket queue unset emails and try again later?

ntozier

BrianC However, the email that was being sent at the time of the error is never sent. Does osTicket queue unset emails and try again later?

No. osTicket does not Queue emails. It tries to send emails, if your mailserver does not accept the email for some reason then it gives up.