New DHCP server, clients with dynamic IP problems.
Up to recently we used DHCP server in our Zonedirector 3000, I know it wasn't the best solution. But now we added a lot of new clients and huge increase in BYOD, so we've setup a separate DHCP server (dynamic pool is working fine and it leasing out addresses) and the one in Zonedirector is disabled now. But now all dynamic IP clients (static IPs working fine) have an exclamation mark on wireless icon - No Internet Access. Though Internet can be accessed without problems but we cannot send/receive any email using Microsoft Outlook (error - email server cannot be found on the network).
Oh and the software version is 18.104.22.168 and currently upgrading to 22.214.171.124.