DNS Table

  • Thread starter Thread starter Jeff
  • Start date Start date
J

Jeff

I was perusing our DNS table on the local AD domain
controllers. I have seen numerous duplicate entries
where there are several hostnames referencing the same IP
address. Some of these entries I know are the same
machine that has been renamed. The former hostname is
still listed in the DNS table. Some of these former
names are a few months old. This does not seem to me to
be a good thing. What could be causing this?
 
In
Jeff said:
I was perusing our DNS table on the local AD domain
controllers. I have seen numerous duplicate entries
where there are several hostnames referencing the same IP
address. Some of these entries I know are the same
machine that has been renamed. The former hostname is
still listed in the DNS table. Some of these former
names are a few months old. This does not seem to me to
be a good thing. What could be causing this?
Click to expand...

By default, record scavenging is turned off. You can enable scavenging then
DNS will delete obsolete records that are time stamped. I think seven days
is default once scavenging is enabled and you have DNS timestamp the
records. If you have any persistant (no time stamp) records they will not be
scavenged.
 
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