[cobalt-users] DNS reverse address lookup, Raq3i

[jale@xxxxxxxxxx]

A couple of weeks back there was a post, maybe from Jeff Lasman, that said 
there should not be Automatic Reverse Address Record Generation records for 
each domain.

When we setup our DNS, we went by the book, which had us do that, so for 
each domain, I have:

1) domain.com --> ip address
2) www.domain.com --> ip address
3) ip address --> domain.com (27 bit)
4) ip address --> www.domain.com (27 bit)
5) domain.com --> high speed mail server www.domain.com

All "appears" to work fine, but I want to clean up my DNS if this is setup 
incorrectly. So my questions:
1) should each domain NOT have its own reverse PTR record (# 3, 4 above)?
2) should there be one reverse PTR record ... per server? per IP? Not at all?

Not having one for each domain would be very convenient, it would speed up 
my DNS work as I don't have to create the extra entry which I have to edit 
to change the default 24 bit to 27 bit for my subnet mask.

Thanks in advance,
Jale