Product : Cloudiway FreeBusy between Gsuite and Office 365
When you are using the troubleshooting tool for coexistence, you receive the following message:
Error : System.Net.WebException: The underlying connection was closed. Could not establish trust relationship for the SSL.TLS secure channel.
—> System.Security.AuthenticationException: The remote certificate is invalid according to the validation procedure.
There are some steps you can take to resolve this situation:
- you are probably using a proxy that breaks the security certificate or that goes to the wrong server: you can check which server is configured with the command:
get−availabilityaddressspace | fl
- check the event logs on the Exchange server for anything logged relating to this message
- check the output of nslookup xxx.cloudiway.com (where xxx is the start of your Cloudiway URL)
- check the output of ping xxx.cloudiway.com (where xxx is the start of your Cloudiway URL)