Hi all,
I have a request from the APPs team, they want to implement a new application and the vendor requires a new binding in IIS for https:587 and for it to use my signed exchange server certificate.
I've added the new binding to the default website, restarted the default website and restarted the exchange services on all 3 DAG member servers.
After this all inbound mail from my "smarthost" service stops coming in and just queues up in the cloud service.
Also my MFD devices which use an internal SMTP Relay connector on port 25 stop working?
Removing the binding and restarting the exchange services brings mailflow back to life.
What am I missing? Do I need to reboot the mailbox servers after applying the new binding?