Exchange Check Connectors
To quickly test the connectors and check the validity of the certificates, the following command can be issued.
If the status code is Success then we know that a connection exists and the certificates are valid.
write-host; hostname; date; write-host; Test-SmtpConnectivity | ft -a -wr | Out-String -Stream
If the result is not OK, then not only the internal but also the external blacklist should be checked.
Invoke-WebRequest “http://crl.globalsign.com/gspersonalsign2sha2g3.crl” -UseBasicParsing -UseDefaultCredentials | Select * -ExpandProperty Headers | ft -a -wr