DNS
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... The most common negative responses indicate that a particular RRset
does not exist in the DNS. The first sections of this document deal
with this case. Other negative responses can indicate failures of a
nameserver ...
...
Despite the DNS forming a tree of servers, with various mis-
configurations it is possible to form a loop in the query ...
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This section presents a potted history of negative caching in the DNS
and forms no part of the technical specification of negative caching ...
...
Sometime around the spring of 1985, I mentioned to Paul Mockapetris
that our experience with his JEEVES DNS resolver had pointed out the
need for some kind of negative caching scheme. Paul suggested that
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... Late in 1987, I released the initial beta-test version of CHIVES, the
DNS resolver I'd written to replace Paul's JEEVES resolver. CHIVES
included a search path mechanism that was used pretty heavily at
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... RRs if
they weren't supplied in the authoritative response, so it never
managed to completely eliminate the gratuitous DNS error message
traffic ...
... retransmission algorithm, so negative caching resulted
in drasticly better DNS response time for our users, mailer daemons,
etcetera.
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... we did have tended to drive CHIVES pretty hard. Several interesting
bits of DNS technology resulted from that, but the one that's
relevant here is the MAXTTL configuration parameter.
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... mail-related, and the mail queue timeout was set to one week, so this
gave a "stuck" message several tries at complete DNS resolution,
without bogging down the system with a lot of useless queries. Since
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... took the place of negative caching in some cases. The CHIVES
resolver daemon could be configured to load DNS master files, giving
it the ability to act as what today would be called a "stealth
secondary". That is, when configured in this way, the resolver had
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... path, since between them the hosts in these two zones accounted for
the bulk of the DNS traffic). Not all sites running CHIVES chose to
use this feature; C.CS ...
... additional security threats other that those that already exist when
using data from the DNS.
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