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<DIV><FONT face=Arial size=2>You should try a 'dig microsoft.com +trace' and see
where the problem resides.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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<DIV
style="PADDING-LEFT: 32px; FONT-SIZE: 11px; COLOR: #036d81; FONT-FAMILY: Arial, Helvetica, sans-serif">Pablo
Lionel Arturi</DIV>
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style="PADDING-LEFT: 32px; FONT-SIZE: 11px; COLOR: #999999; FONT-FAMILY: Arial, Helvetica, sans-serif">Maipú
464 - 1° B - 1006 Capital Federal<BR>Ciudad Autónoma de Buenos Aires<BR>+5411
5218 4829<BR><A
style="FONT-SIZE: 11px; COLOR: #999999; FONT-FAMILY: Arial, Helvetica, sans-serif"
href="mailto:parturi@bairesweb.com">parturi@bairesweb.com</A></DIV></DIV></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=revital@yorku.ca href="mailto:revital@yorku.ca">Revital Gorsht</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=bind-users@lists.isc.org
href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, April 07, 2009 4:53
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Strange DNS Resolution
Issues</DIV>
<DIV><BR></DIV><FONT face=sans-serif size=2>Hi all,</FONT> <BR><BR><FONT
face=sans-serif size=2>A few weeks ago, two of several internal DNS servers
were suddenly unable to resolve some external sites (eg microsoft.com,
yahoo.com), while all internal and other external sites (eg google.com) were
resolving fine. Since we couldn't pinpoint the cause, the problem went
on for about 5 hours and then magically fixed itself... we were all left
scratching our heads.</FONT> <BR><BR><FONT face=sans-serif size=2>Yesterday,
(two weeks after the initial problem and curiously at around the same time)
the problem reappeared for about 30 minutes. </FONT> <BR><BR><FONT
face=sans-serif size=2>All of our servers (affected and non-affected) are
running BIND 9.5.1-P1. The failed queries return timeouts or SERVFAILs.
Restarting BIND did not fix the problem. Nothing suspicious in the
logs. </FONT><BR><BR><FONT face=sans-serif size=2>Has anyone else experienced
this sort of thing recently? Can anyone point me in the right direction?? Is
this even a BIND issue??? I'll be more than happy to provide any further
details!</FONT> <BR><BR><FONT face=sans-serif size=2>R.</FONT> <BR>
<P>
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