Years ago, I figured out how to monitor the Exchange Integration of Group Series devices with the Exchange Room Resources and OTD. I do this via SNMP.
It's a blessing and a curse - and right now it's a curse because my inbox is being flooded with my room systems going up and down with their connections to their respective mailboxes. It started this week - mainly in the evening - and in both my US and UK locations.
I just placed a support ticket on this. Wondering if anyone else is noticing this behavior. If I simply stopped monitoring it - then I wouldn't know about it.
I experienced something similar about 3-4 years ago and fixing it involved using the OTD logins rather than the straight logins on the Group Series - or so I recall.
One thing that comes to mind is Microsoft eliminating SMTP Basic Authentication. I'm not sure if OTD uses modern or basic auth. If it's basic - that's a problem.
Also noticing that the OTD Portal is very sluggish tonight.