Active Directory and DNS

[Barry Finkel]

hoyoung at us.ibm.com wrote:

>My problems is that ourzones.org has been used with MX records
>(ourzones.org IN MX ....).  I assume this will cause problems if it's been
>used by w2k DCs.  What's the work around?

There should be no problem.  MX records are like SRV records
in their purpose.  They tell where to find a given service.  With

     ourzones.org IN MX ....

you are telling people where to send mail addressed to

     _____ at ourzones.org

There is no conflict if ourzones.org has one or more IP addresses.
The conflict exists in this case:

     ourzones.org     IN CNAME www.ourzones.org
     www.ourzones.org IN A     192.168.2.3

     ourzones.org     IN A     192.168.1.2

where the CNAME is inserted by the DNS administrator to allow users to
use either of these URLs

     http://www.ourzones.org
     http://ourzones.org

If MS Win2k comes along and tries to register the "A" record, BIND
will complain because the definition for ourzones.org will be
ambiguous --

     Is the address for ourzones.org 192.168.2.3 (the CNAME)?
     Or is the address for ourzones.org 192.168.1.2 (the address of
        the MS Win2k Domain Controller)?

----------------------------------------------------------------------
Barry S. Finkel
Electronics and Computing Technologies Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-9689
Building 221, Room B236              Internet: BSFinkel at anl.gov
Argonne, IL   60439-4844             IBMMAIL:  I1004994