I stumbled across this issue when working on a caQTdm based FOM screen for SEI. The MEDM screen seemed to work just fine, but the caQTdm screen was broken.
Looking into the problem further I found the servers that the data was getting pulled from for the rest of the screen were listed as such, 
FQDN:portnumber.
But the HAM8 Server was listed as:
FQDN:arpa.portNumberGibberish
So I scoured the linked files for server names and found nothing of the like in my caQTdm files.  

I spoke to Erik and showed him what I had found.
We opened the DNS settings and noticed the error.
Updated the DNS record for h1cdsh8 and It's now resolved. Committed the changes to SVN and updated the other servers.