A photocopier vendor I we work with for one of our customers, who has a background in IT networking, was on-site had an issue and discovered that the DNS settings on a particular workstation on the network were incorrect: the primary was set to an IP that didn't exist. The secondary was correct however. This led me to wonder if I should check all the workstations, which are entirely Win 7 Pro. Network OS is Windows Small Business Server 2011. DHCP is provided by a Sonicwall.
As the customer is very remote, I need to find a way to do this without going on-site to check each machine by hand. Is there a tool (ie nmap or something) that can pull the DNS settings from each workstation running on the network for me?