newbee dns ?

  • Thread starter Thread starter Herb Martin
  • Start date Start date
H

Herb Martin

JohnS said:
I'm installing 2 * 2003 DC's with AD with dns on both.
The 1st one will be the primary server just for file & print while the other
will host exchange 2003.
Should i leave recursion on both or just on the the exchange box ? or does
it matter ?
Click to expand...

Leave them both the same probably (whichever). An important principle of
DNS: Clients presume that ALL DNS servers they use will return the SAME
(valid) answers.

You decide to leave "recursion" enabled either because you do NOT use
"forwarding" OR because you want the recursion to back up the forwarding
if the (ISP etc) forwarder fails (which isn't usually a big consideration or
you should probably pick a different forwarder anyway.)

Exception: If one of the two servers does the actual Internet recursion,
the
second can forward to "consolidate" the cache on one server -- disadvantage:
if the forwarder fails then you might lose Internet resolution (so again, it
makes
sense probably to leave the 2nd with recursion enabled.)
 
In
JohnS said:
I'm installing 2 * 2003 DC's with AD with dns on both.
The 1st one will be the primary server just for file & print while
the other will host exchange 2003.
Should i leave recursion on both or just on the the exchange box ? or
does it matter ?

Thanks in advance...
Click to expand...

NO realy reason to disable recursion. If you do, you may not be able to
resolve records other than what the machine is authorative for.

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
In
JohnS said:
I'm installing 2 * 2003 DC's with AD with dns on both.
The 1st one will be the primary server just for file & print while
the other will host exchange 2003.
Should i leave recursion on both or just on the the exchange box ? or
does it matter ?

Thanks in advance...
Click to expand...

If you disable recursion, DNS will only resolve the zones it owns.
 
I'm installing 2 * 2003 DC's with AD with dns on both.
The 1st one will be the primary server just for file & print while the other
will host exchange 2003.
Should i leave recursion on both or just on the the exchange box ? or does
it matter ?

Thanks in advance...
 
There's shouldn't be a reason to disable it. Leave it at the defaults (enabled) and DNS will work happily.

Thank you,
Mike Johnston
Microsoft Network Support
--

This posting is provided "AS IS" with no warranties, and confers no rights. Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

Note: For the benefit of the community-at-large, all responses to this message are best directed to the newsgroup/thread from which they originated.
 
Back
Top