Encontrei a seguinte mensagem nos registros de eventos do servidor DNS.
O que devo fazer foi explicado dentro da mensagem, mas não sei exatamente o que significa.
Log Name: DNS Server
Source: Microsoft-Windows-DNS-Server-Service
Date: 14.08.2011 11:30:57
Event ID: 414
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: WIN-EG75FS9C2F2
Description:
The DNS server computer currently does not have a DNS domain name.
Its DNS name is a single-label host name with no domain (for example:
"host" rather than "host.microsoft.com").
You might have forgotten to configure a primary DNS domain for the
server computer.
Because the DNS server has only a single-label name, all zones created
will have default records (SOA and NS) created using only this
single-label name for the server's host name. This can lead to
incorrect and failed referrals when clients and other DNS servers use
these records to locate this server by name.
To correct this problem:
1) Click Start, and then click Control Panel.
2) Open System and Maintenance , and then open System.
3) Click Change Settings, and then click Change. 4) Click either
Domain or Workgroup, and then type the name of the domain or
workgroup you want the computer to join; the domain or workgroup name
will be used as your DNS domain name.
5) When prompted, restart the computer.
After the computer restarts, the DNS server will attempt to fix up
default records, substituting the new DNS name of this server for the
old single-label name. However, you should review the zone's SOA and
NS records to ensure that they now use the correct domain name of this
server.
Event Xml:
<Provider Name="Microsoft-Windows-DNS-Server-Service"
Guid="{guid-comes-here}" EventSourceName="DNS" />
<EventID Qualifiers="32768">414</EventID>
<Version>0</Version>
<Level>3</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2011-08-14T08:30:57.000000000Z" />
<EventRecordID>159</EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel>DNS Server</Channel>
<Computer>MyComputerName</Computer>
<Security />
<Binary>
</Binary>