The DNS server encountered an invalid "@" token "{0}" in zone file {1} at line {2}. Although the DNS server continues to ...

The DNS server encountered an invalid "@" token "{0}" in zone file {1} at line {2}.  Although the DNS server continues to load, ignoring this token, it is recommended that you either correct the token or remove the resource record from the zone file.  The zone file is located in the %SystemRoot%\System32\Dns directory.