currently having this issue. i am trying play with the exchange settings and mailbox settings. i have the EAC set with turn off smtp auth protocol, unchecked. i went to the account and unchecked smtp auth, and then set it again 10 minutes later... what am i missing?
previously existing setup, token expired so i went to refresh, now getting the api v2 deprecated message.
double checked the mailbox settings, nothing changed. created a new token and secret, recreated the email in OSticket.
i removed the global setting as stated above, i disabled smtp auth on the account, left it for an hour. switched it back to on, less than 30 minutes, but still not working.