If you find your Windows Server 2008 (download link) DNS Server is unable to resolve names in certain top level domains (tld’s) like .co.uk, .cn, and .br when it is configured to use root hints. It may also occur with other tld’s. A network monitor trace shows the DNS Server does not send any DNS traffic out to the internet. The Windows 2008 DNS server returns SERVFAIL to the client or when using nslookup.

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