Forum Discussion
Accepted domains
HI, using new outlook 365 program with my exchange email address. I have added my isp email account as I still use my old email address as primary. At that address, I have set up an auto forward...
Fixed. Made my exchange mailbox a shared mailbox. When sending a reply to something using my ISP email address instead of the exchange email address, no more error about not being authorised. 🙂