Re: Slow DNS lookup
From: Peter Schou (psc_at_EM_MAPS_TNODflexatel.com)
Date: 08/30/04
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Date: Mon, 30 Aug 2004 20:39:29 +0200
Thanks Ace for taking your time to drop in. Also thanks to Kevin for testing
the servers. Excellent replys I got there.
Sorry I dropped offline for a few days.
I have already disabled forwarders on my server and are now only using
roothints. Every thing seems ok and the system is working fine. I will test
using those addresses Kevin gave me.
-- Thanks --
Peter Schou
B.Sc.DE.
"Ace Fekay [MVP]"
<PleaseSubstituteMyActualFirstName&LastNameHere@hotmail.com> skrev i en
meddelelse news:%23WZm6LliEHA.1280@TK2MSFTNGP09.phx.gbl...
> In news:u%235vkLphEHA.2848@TK2MSFTNGP10.phx.gbl,
> Peter Schou <psc@EM_MAPS_TNOD_flexatel.com> made a post then I commented
> below
> > Thanks for your reply Kevin.
> >
> > I havent found any 7063 events in my log.
> > Every thing seems to be working OK now. However I will try using the
> > forwarders you suggested in a previous post.
> >
> > Sorry I forgot to tell you my forwarder timeout. Its set to 5 sec.
> > Lowering this value did help, but didn't resolve the problem. Now
> > using 5 sec again. Is 5 the default value?
> >
> > Thanks for your patience.
> >
> > Best regards
> > Peter
>
> Hi Peter,
>
> Just wanted to jump in and add that what Kevin is trying to say is that
the
> addresses you provided do not support being forwarded to, and are timing
out
> and your system is using it's Root Hints. This is because they have that
> ability turned off by the ISP's administrators. Some ISPs do this in order
> to squelch other administrators using their systems as forwarders and are
> content only DNS servers (their own content) and will not resolve queries
> that are not authorative for (meaning that they won't answer for zones
other
> than the zones that were created in their own DNS servers). Some ISPs just
> do that...
>
> In Kevin's test results, the RD bit means "Recursion Desired" and the RA
bit
> means 'Recursion Available". The tests Kevin performed on those two
servers
> you provided did not return an RA bit, which unfortunatley means that the
> servers do not support being forwarded to.
>
> Try those two addresses that Kevin mentioned as a forwarder, 4.2.2.1 and
> 4.2.2.2. They support forwarding to and work fine!
>
> Unless the provided servers were typos..... :-)
>
> Hope that helps.
>
> --
> Regards,
> Ace
>
> Please direct all replies ONLY to the Microsoft public newsgroups
> so all can benefit.
>
> This posting is provided "AS-IS" with no warranties or guarantees
> and confers no rights.
>
> Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
> Microsoft Windows MVP - Windows Server - Directory Services
>
> Security Is Like An Onion, It Has Layers
> HAM AND EGGS: A day's work for a chicken;
> A lifetime commitment for a pig.
> --
> =================================
>
>
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