Jul 27 2023 02:27 PM
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 which changed the public address. I believe I changed everything properly and DNS lookups are successful. However, I am not routing email. I read a few articles which indicate I may need a new CA Certificate from Exchange online however I'm not able to find where I would generate that certificate. Any feedback would be helpful.
Jul 27 2023 05:31 PM
Jul 28 2023 05:18 AM
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
Aug 02 2023 03:32 PM
I needed to download M365 certs to my on prem server and delist the new IP from Microsoft. Then is worked