There is nothing auditing there!
You must just enabling scaveging for zones and on setup this setting on one server
http://blogs.msmvps.com/acefekay/2009/08/20/dhcp-dynamic-dns-updates-scavenging-static-entries-amp-timestamps-and-the-dnsproxyupdate-group/ 
No need to afraid: this setting doesn't make black magic, but 95% administrators fall into issues with duplicate or "stale" records.
Sorry, can't spent much time and hope you read all links from Ace's post carefully.
http://blogs.technet.com/b/isrpfeplat/archive/2010/09/23/dns-scavenging-internals-or-what-is-the-dnstombstoned-attribute-for-ad-integrated-zones-dstombstoneinterval-dnstombstoned.aspx 
http://blogs.technet.com/b/networking/archive/2008/03/19/don-t-be-afraid-of-dns-scavenging-just-be-patient.aspx 
Thanks, Dima.
Пятница, 29 апреля 2016, 22:22 +03:00 от Lisa Faulkner <lisa.k.faulkner@xxxxxxxxxxxxxxxx>:

Thanks, Dina. Can you explain this more? We do have current timestamped entries. Are you saying the zone should be set to age and scavenge but not have a server scavenging? We need to do a thorough audit before we fully enable scavenging. 
Sent from my iPhone
On Apr 29, 2016, at 12:11 PM, Dmitriy <mozhaika@xxxxxxxxxxxxxxxx> wrote:

Hello, Lisa!
Check DNS scaveging setting. If it is disabled, there is no Dynamic Updates for AD-replicated zones, cause AD is smart enough don't replicate stuff without timespamps.
Kind regards, Dima.
 lisa.k.faulkner@xxxxxxxxxxxxxxxx:

show