CNAME CHAINING
wwebb at adni.net
wwebb at adni.net
Fri Dec 31 18:33:27 UTC 1999
Is there any legitimate reason to use CNAME chaining?
Some CNAME chaining was identified in one of our zones and the
person who operates the name servers of a delegated sub-domain
advised:
"We use CNAME chaining to avoid reverse DNS lookup problems.
For example, if a DNS query produced the following:
Server: wolfden.emtoo.net
Address: 151.198.89.3
Name: www.njwg.cap.gov
Address: 151.198.89.100
and the reverse DNS lookup resolved as follows:
151.198.89.100 -> bsys01-4.emtoo.net
name resolution problems will occur and depending on the
accessor, the CAP web site may be blocked from access, not
listed in search engines, or be listed in impropperly."
I had never heard of this before and I would appreciate the groups
insight on this issue.
Thanks, Bill Webb
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