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Date:      Mon, 27 Jul 1998 09:52:57 +1000
From:      Gregory Bond <gnb@itga.com.au>
To:        Rico Pajarola <pajarola@cybertime.ch>
Cc:        Karl Pielorz <kpielorz@tdx.co.uk>, freebsd-stable@FreeBSD.ORG
Subject:   Re: MX CNAME 
Message-ID:  <199807262353.JAA20092@melba.bby.com.au>
In-Reply-To: Your message of Sun, 26 Jul 1998 06:26:38 %2B0200.

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A reminder about updating DNS info - the NIC needs to know both the name and 
the IP address of your DNS servers so that (in the common case where the 
nameservers for foo.com live inside foo.com) the nameserver can return a 
so-called "glue record" with the IP address.  Otherwise, when you ask "who is 
the domain server for foo.com" you get told "dns.foo.com" but you can't look 
up the address of dns.foo.com without knowing the answer to the question you 
are trying to ask in the first place!

The upshot is changing _either_ the name or the IP address of a listed name
server requires updates to the NIC database.  So tricks with cnames etc don't 
actually add much flexibility.




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