I was reading this with interest...
For the last couple of years, this has been working perfectly on our 5 HP Hypervisors, until 1 - 2 months ago.. SIM 7.6 (inc hotfix) - 11/06/2019 UK
Now, only two of the servers are still working, the other 3 have totally packed up sending, when I try the test email its says "The email could not be sent. Could not connect to the SMTP Host"..
We have done nothing to these servers, except maybe the odd Windows Update...
We can send SMTP from the server itself..., but not from Insight Manger.., just doesn't want to know any more...
Any ideas...?
