We a multi-site, multi-domain network. The local site (FTH) here is a child domain fth.ghgroup.ad of the parent domain ghgroup.ad. We have our own local DNS servers so when the link to ghgroup.ad fails there should be no issue however somehow our local DNS servers are still refering to ghgroup.ad for DNS. I can’t see why this is happening. Local DNS does seem to work because I administer this all the time adding/removing records etc however when the link to ghgroup.ad fails everything falls over.