[SLUG] NXDOMAIN error, puzzle ???

[Stuart Hume]

hi, I'm trying to set up two domain names and the first one when through with no problems. The second one give me back the following message when i did a    grep "findns" /var/log/messages          May    8    17:51:24 fwall named[6757]  sysquery:findns error (NXDOMAIN)  on fwall.issuemeter.com?   What does this message means ?   Puzzle ???