stops answering at same time every day

[Simon Hobson]

Allie M Hopkins wrote:
>I turned on query logging last night and nothing seems out of the ordinary.
>Only one server stopped responding this time, but it was our master so all
>zone transfers are stopped for the same amount of time.  The CPU
>utilization was low, no crazy connections, no different processes running.
>I'm truly stumped.
>
>Doesn't anyone have any advice or suggestions?
>
>I can log into the machine remotely during this downtime and do anything
>else as usual.  The only thing different is the name server stops
>responding to all types of requests.  What could possibly cause this at
>such a regular interval?
>
>Many departments take internet based tests in the afternoon, so this is
>really affecting many people.  I'm just out of ideas.  Tonight I will have
>a sniff going on the servers to see if there is something else I'm missing.
>
>I'm begging for suggestions.  I've been troubleshooting for weeks.

Probably no help, but ... You don't have anything that updates the 
DNS servers each evening do you ? Just thinking of automated systems 
that might re-build the config file from a database and re-load the 
servers.

Simon

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Simon Hobson MA MIEE, Technology Specialist
Colony Gift Corporation Limited
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