If Secure-IT server configured in DMZ and the connection broker server's name resolution is not available in DMZ DNS server. Create a host record on the Secure-IT (Secure Gateway) server pointing to the connection broker(s).
Host file can be located in C:\Windows\System32\Drivers\Etc\
Example of a host record.
10.10.50.50 MyCBSrv.mydomain.local MyCBSrv
Ensure Secure Gateway server can resolve the name of the connection broker by NETBIOS and FQDN.