What a mess! I need help...

[Glenn Davidson]

I have inherited a DNS nightmare.  We are moving to a new hardware/software
solution and I've been asked to straighten out the DNS server.  It appears
that we switched domain names recently so there's alot of references to the
old domain.  There are also alot (about 30) domains registered to us and
each has been given it's own file.  All the files are identical.  There are
many issues to figure out but I hope I will just be able to get a couple of
questions answered and then I can get the rest done.

1.    Is it possible to use a CNAME record in the file for the main domain
to point all the "identical" files (all those other registered domains) back
to the main domain or am I stuck with having to make a new file for every
domain that is registered to us? (Right now the /var/named directory is a
mess)

2.    Is there an easy way to configure the switch from the old domain to
the new one?  The current way is to change the file for the old domain and
copy it to the file for the new domain and then change the references to the
old domain (pretty lame I know).

3.    The last question: I found out (after asking a ton of questions) that
there is an internal domain (2 actually) that I need to get figured in also.
Currently it's managed like the above example with the copying and search
and replace.  Is there a way to utilize the current file(s) to support the
internal domain(s) also?

I have some stuff figured out and I also have more questions but I hope I
can figure some of those out when some of these get answered.

I hope someone can help!  Any takers?

Glenn