Denied recursive query messages from named

[Danny Mayer]

         It took me a while to realise this, but this is from the operator log
   on a VMS System.  Did you build BIND 8.2.3 on VMS?

                 Danny

At 08:31 PM 1/3/01, Kevin Darcy wrote:

>The only thing I can think of is a crappy DNS implementation that gets confused
>about delegations when following CNAMEs to PTRs, with the result that it thinks
>your servers are authoritative for 100.80.190.208.in-addr.arpa.
>
>One way to deal with this is just to go with the flow: set yourself up as a
>slave for 100.80.190.208.in-addr.arpa. This won't stop the queries, but it
>should stop the log messages, since in that case there won't be any recursion
>necessary (and therefore none to deny). As an additional benefit, being a slave
>for the zone will enable you to reverse-resolve your own addresses even if you
>lose connectivity to the Internet.
>
>
>- Kevin
>
>Damon Brownd wrote:
>
> > Our ISP recently delegated our in-addr.arpa subdomain for our /27 address
> > block to our name server as specified in RFC 2317.  Since then, I've been
> > getting bursts of messages like the following at semi-regular intervals.
> > They tend to be from the same IP addresses but the addresses do change over
> > time.  The thing that got my attention is that requests come from so many
> > different IP numbers within a second or two with pauses of an hour or more
> > between bursts.  Our name server is currently configured to allow recursive
> > queries from internal addresses and reject them from elsewhere.  The name
> > server is BIND 8.2.3.
> >
> > Are these messages safe to ignore or do they indicate a problem I need to do
> > something about?
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.43  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [216.52.85.194].3409 for
> > 100.80.190.208.in-addr.arpa
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.81  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [216.52.125.38].8857 for
> > 100.80.190.208.in-addr.arpa
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.81  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [64.94.206.66].1428 for
> > 100.80.190.208.in-addr.arpa
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.84  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [216.52.153.130].3591 for
> > 100.80.190.208.in-addr.arpa
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.85  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [216.52.44.194].1066 for
> > 100.80.190.208.in-addr.arpa
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.86  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [64.94.163.226].3319 for
> > 100.80.190.208.in-addr.arpa
> >
> > %%%%%%%%%%%  OPCOM   3-JAN-2001 10:20:03.88  %%%%%%%%%%%
> > Message from user SYSTEM on IRIS
> > named: denied recursion for query from [63.251.235.226].2051 for
> > 100.80.190.208.in-addr.arpa
>
>
>