Geo located DNS support
This topic only applies if ESA is installed in Active Directory Integration mode.
If there are several sites in your Active Directory domain based on geographic location, each computer connected to your domain belongs to a specific site.
If an Authentication Server is installed on each site, verify the appropriate computers authenticate against the corresponding authentication server.
The steps below describe how to add a Service Location (SRV) record in a Windows Server 2012 R2 operating system.
1.On your main computer, which is the domain controller, click Start > Administrative Tools > DNS.
2.In the DNS Manager, expand Forward Lookup Zones > <your domain> > _sites.
3.Look up _tcp for each site under_sites.
4.Right-click a _tcp, select Other New Records > Service Location (SRV), click Create Record.
5.Type _esetsecauth in the Service field, and _tcp in the Protocol field.
6.Set the Priority and Weight to 100.
7.Set the Port number to 8000, unless you changed the port number during Authentication Server installation.
8.Type the fully qualified domain name (FQDN) of the applicable Authentication Server in the corresponding site.
9.Click OK, click Done.