Hey,
At the moment I am with a customer who has two Exchange Server 2013 and two Exchange Server 2016 servers.
We want to create a send connector with one of the two Exchange Server 2016 machines as source. When created via the command below, Exchange tries to route the mail to the Exchange Server 2013 machine. Do you know a reason why the mail keeps routing to the Exchange Server 2013 machine?
New-SendConnector -Name OutgoingViaEOP -AddressSpaces testdomain.com -CloudServicesMailEnabled $true -Fqdn mail.example.com -RequireTLS $true -DNSRoutingEnabled $false -SmartHosts ***.mail.microsoft.com -TlsAuthLevel CertificateValidation -Usage Internet -SourceTransportServers ex16-1