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When DNS entries are created for a DHCP release, when are they removed?

DevilsbaneDevilsbane Member Posts: 4,214 ■■■■■■■■□□
in MCTS / MCITP on Windows 2008 General
Is there a set period when entries created in DNS from DHCP are removed? Does it automatically get removed when the lease expires without renewal?
Decide what to be and go be it.
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    ClaymooreClaymoore Member Posts: 1,637
    They are scavenged when the DNS record becomes stale, based on the last time it was dynamically updated. Scavenging isn't enabled by default.

    Old article, but good explanation:
    Scavenging Stale DNS Records

    2008 info:
    Understanding Aging and Scavenging
    By default, the aging and scavenging mechanism for the DNS Server service is disabled. It should be enabled only when all parameters are fully understood. Otherwise, the server can be accidentally configured to delete records that should not be deleted. If a record is accidentally deleted, not only will users fail to resolve queries for that record, but any user can create a record and take ownership of it, even on zones that are configured for secure dynamic update.
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