Question : add smart host entry in edge server

Hi,

I have exchange 2007 with edge server subscription and a SMTP gateway. I want that edge server send/Receive mail to SMTP gateway, Then SMTP gateway send/receive mail to internet, to do this I try to make a smart host entry in send connector (edgesync-default-first-site-name) at edge server.
But I got error which described below:

Some controls are not valid
 The DomainSecureEnabled parameter can't be set to $ True unless the DNSRoutingEnabled parameter is also set to $True.

Any Suggestion would be appreciated

Answer : add smart host entry in edge server

This is due to Exchange requirements for TLS authentication, which needs to be enabled for sending and receiving connector.

See the Help for Set-ReceiveConnector:
http://technet.microsoft.com/en-us/library/bb125140.aspx

And for Set-SendConnector:
http://technet.microsoft.com/en-us/library/aa998294.aspx

DomainSecureEnabled is set to $true on default send/receive connectors on Edge Transport to enable mutual TLS, so TLS must also be an available authentication mechanism. The parameter is AuthMechanism on a receive connector and SmartHostAuthMechanism on a send connector.