One A record fails on one server on Sunday evening

[Barry Margolin]

In article <mailman.872.1257181286.14796.bind-users at lists.isc.org>,
 Josh Luthman <josh at imaginenetworksllc.com> wrote:

> It has happened the last 4 or 5 Sunday nights.
> 
> Currently there are no logs - what categories would you suggest I start
> logging?
> 
> The server comes back with simply no response.  It just times out.  It
> resolves every other record I could think of to ask it.  Also, it may or may
> not be relevant but if I ssh in I can ping (and hence resolve) the
> mail.alexandertelecominc.com.

When it's failing, make a cache dump.  Check the cache for the NS 
records of the domain, and the A records for the nameservers.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***