I've over 900 messages currently deferred inthe mail queue and I don't know why they arenot moving. I spent the greater part of the day changing the netmask from a class c /24 to /23. I made sure that the trusted networks on the MTA setting was changed to reflect this. The mail server was rebooted and I sent a test message with success earlier.

Now I'm stumped...

any ideas on where to begin looking for the problem?