By default Unity uses the original called number to reach a VM box. In this case it looks for the hunt pilot DN.
You can create a call routing rule to send the call to X mailbox, or if you're going to route the calls always to the same guy configure the DN as an alternate number under his subscriber.
HTH
java
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www.cisco.com/go/pdihelpdesk
HTH
java
if this helps, please rate