Hosting multiple TLDs
Mark_Andrews at isc.org
Mark_Andrews at isc.org
Thu Aug 28 00:23:09 UTC 2003
> That is _good_ practice. _Best_ practice is for all of the intermediate
> domain names to be subdomains of the domain being delegated itself. (For
> example, all of the intermediate domain names used in the delegation of
> "gwu.edu." would be subdomains of "gwu.edu." itself.) The reason for this is
> that it allows server softwares such as BIND, "tinydns", and Microsoft's DNS
> server to continually refresh the cached delegation information with each
> response that they send.
Actually they don't cache this information. It would be nice
if they could but too many administators fail to turn off /
update the old servers when they make changes in the delegation.
This leads to server lock. Both BIND 8 and BIND 9 have explicit
code to prevent this.
Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews at isc.org
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