You said that netstat -a showed that it was listening, but on which IPs? It could be that it's only binding to the 127.0.0.1 IP address, and not the 10.1.200.2 IP. I'd run 'netstat -an' to see IPs without name resolution getting in the way.Your odbase.xml would probably also be helpful for diagnosing the problem.
<localNode host="INTERWOVEN"/>
<localNode host="10.1.200.2"/>