I have used the following to check when domain controller a member server has a secure channel with:

C:\>netdom verify SERVERNAME
The secure channel from SERVERNAMEto the domain DOMAINAME has been verified. Th
e connection
is with the machine \\SERVERNAME.DOMAINNAME.

The command completed successfully.

Furthermore, you can use the following to reset the secure channel:

C:\>NETDOM RESET SERVERNAME
The secure channel from SERVERNAME to the domain DOMAINNAME has been reset. The c
onnection is
with the machine \\SERVERNAME.DOMANANAME.

The command completed successfully.

I have used similar commands on older OSs, but I am not sure if they were part of the install or part of a resource kit. I have tested these on Windows 2008 and Windows 7.