An exception was thrown during while updating the dns cache

If the certificate does not exist in the personal store, restore it from backup by using the Import-Exchange Certificate cmdlet, or create a new certificate for the FQDN or the server enabled for SMTP by running the following command: New-Exchange Certificate -Domain Name serverfqdn -Services SMTP.Microsoft Exchange could not find a certificate that contains the domain name %1 in the personal store on the local computer.Microsoft Exchange could not load the certificate with thumbprint of %1 from the personal store on the local computer.

The connection to secure domain '%1' on connector '%2' failed because Transport Layer Security (TLS) negotiation was unsuccessful. Please contact the administrator of %1 to resolve the problem.Contact the administrator of %1 to resolve the problem, or remove the domain from the domain-secured list.A message from domain-secured domain '%1' on connector '%2' could not be authenticated because the server did not use Transport Layer Security (TLS).If the problem persists, contact the administrator of the smart host to resolve the problem.