After Microsoft Office 365 Hybrid Configuration Wizard assigned our valid certificate to the Office 365 Connector, the Application Log started showing "Event ID 12018 The STARTTLS certificate will expire soon..." errors. And this even though there are still almost 3 months before the expiration of the certificate.
Office 365 support as well as Sectigo support (Certificate Authority) couldn't help us.
In search of a solution, we studied and tried the solutions suggested in these threads:
But, unfortunately, none of these 2 commands led to the result:
Add-GlobalMonitoringOverride -Identity "HubTransport\Transport.ServerCertExpireSoon.Monitor" -ItemType Monitor -PropertyName MonitoringThreshold -ApplyVersion 15.1.2375.7 -PropertyValue 360
Add-ServerMonitoringOverride -Server EX2016 -Identity "HubTransport\Transport.ServerCertExpireSoon.Monitor" -ItemType Monitor -PropertyName Enabled -PropertyValue 0 -Duration 7.00:00:00
We receive 400 such messages every day from one server - this is too much. Is there any way to fix this?