Forum Discussion
Having issues connecting on prem smtp server to exchange online
I have an on-prem SMTP server which is being used by an application to email invoices. The on prem server was setup with a connector and was working successfully. Recently I had to change ISP whic...
Thanks. Yes I updated the connector with the new IP address. I didn't do the original setup, so I'm not sure if there was a CA or not. My documentation indicates I need a CA from the exchange online server, however, MS documentation indicates I need a CA from my onprem server
I needed to download M365 certs to my on prem server and delist the new IP from Microsoft. Then is worked