I have a problem with one of my five post offices. I went to run a Validate Database task, and it errors out after a second and displays the following in a red text:

javax.ws.rs.WebApplicationException: javax.xml.bind.MarshalException - with linked exception: [java.net.ConnectException: Connection refused] (null)

Just tried this on one of my other post offices, and it is running just fine.

I was trying to figure out why we are having some issue with this post office/server.

Server is OES 11 SP2 / SLES 11 SP3
post office is on an NSS volume

system was upgraded from 2012 to 2014 over a month ago.