My problem is that there are some applications which are trying to access a
server not based on our locations by just referring to it as "servername"
without any suffix.
Our suffix looks like this: "location.companyname.com"
servername.location.companyname.com doesn't resolve
while servername.companyname.com resolves properly.
My idea was to add additonal dns suffixes (like in Windows TCP/IP
configuration panel), but I don't know how to do that through DHCP.
Maybe through global options somehow?

Any suggestions are welcome.