I ran the address
www.ozchess.com.au through
www.dnsstuff.com and received a whole lot of diagnostic information. I suspect the main cause of failure is the the website only has NS information registerd with 1 nameserver (au2ld.CSIRO.au.) when it needs two nameservers minimum. If au2ld.CSIRO.au. can't handle the request I suspect the site goes missing.
This is a problem that I assume should be fixed by vbskinworks