Setting up a new network and I am starting to think about DNS. It has
been
awhile since I really looked into Novell's DNS but;

Say I have three mail servers.
I would like the DNS entry mail.domain.com resolve to one of the three

addresses
Now say I want the DNS server only to give out the address if that
address
is pingable. (I.E. the server is up)
Also say that I would like to use the first two servers twice as often
as
the third server. (I.E. hardware limitations on the third server)

In Novell DNS I now that you can add more than one IP address to a
specific
name, but can you weight the IP address to add it in more times than
once.
i.e.
mail.domain.com
A - 10.1.1.1
A - 10.1.1.1
A - 10.1.1.2
A - 10.1.1.2
A - 10.1.1.3

Next, I know that the DHCP server is able to Ping an address to see if
it is
already in use before it hands it out. Can the DNS server do the same

thing?
If so, could the DNS server be setup to send out one IP address all
the
time, until that device fails. Then resolving the DNS name to another
IP
address? (i.e. a disaster recovery site)

Last, what is the current BIND compatibility of Novell's DNS
implementation?


Thanks, easy questions, but I don't know were to find the answers.
Bob