It was because they wanted to redesign the reverse lookup zones to
ease administration. They had forgotten to mention this and assumed
that all clients dynamically registered at reboot in the maintenance
weekend when the change was done.

Regards
Michael

2012/9/5 tsimerson <nbu-forum AT backupcentral DOT com>:
> I'm curious as to why your DNS admin thought removing the reverse lookup zone 
> was a good idea.  The only reasons I've ever gotten at customer sites or 
> within my own infrastructure has been "I thought nothing used them" or "It is 
> a security risk" (which no one has provided valid reasons for this 
> statement).  Either way, these statements can be paraphrased "I'm just lazy 
> and don't want to maintain another zone".  Sorry for the rant but this just 
> bothers the heck out of me when the "admin" does not understand their own 
> technology.
>
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