Do I need DNS entries in both Windows server, and Sophos UTM?

Question

Hey guys, 
 
 I am a home user of Sophos UTM and I have what is probably a basic networking question. I am trying to setup #3 in the DNS Best Practices but I seem to be duplicating work. I have already setup DNS entries in Sophos for each of my devices in the Network Definitions tab. But for the reverse lookup to work it seems like I am having to do it again when I create the reverse lookup zone and PTR records in Windows server. Does this seem correct? Is there anyway to get Sophos to export the DNS records to Windows server or something so I don't have to maintain these in two locations, or so I don't mistype a name or IP and mess it up? 
 
 Also when I do a nslookup it does not display the name of the computer 
 
 C:\Users\joe>nslookup 101.0.168.192.in-addr.arpa Server: home-server.mydomain.local Address: 192.168.0.104 
 Name: 101.0.168.192.in-addr.arpa 
 
 Thanks

rsenio · Answer

That's what I would do if I were you as well. In addition to that, I'd setup the reverse lookup in the "request routing" section so that your reports can properly resolve the dns names of the internal computers. Check here for best practice 
 https://community.sophos.com/products/unified-threat-management/w/utm-wiki/2/dns-best-practice 
 https://community.sophos.com/kb/en-us/120283

Bohdan.S · Answer

So you basically have 2 DNS zones, one for your Windows Server and one in the UTM. 
 My suggestion would be, Set ALL your devices to use the Windows Server DNS. 
 On Windows set the DNS forwarders to your UTM. 
 
 So DNS would go, Device > Windows Server > UTM > Internet 
 
 This would allow all devices to have the correct DNS and reverse DNS records on the Windows server, and your lookups would work.