Drop down the selector box on the right hand side - select "Server Settings". When this loads - if the box next to "Zone Transfer Access" is blank you are allowing zone transfers to anyone (some people do not consider this secure!) so it would work - but if you have set a restricted list of IP's make sure you then add the IP address of your backup / secondary DNS and save settings.
WOW! I thought I had scoured every inch of this RAQ and I never knew about the "Server Settings" section. I configured as you mentioned.
Being a bit paranoid about security I "would" disable zone transfers to anyone - i.e. in the "Zone Transfer Access" box JUST enter the IP addresses of any secondary nameservers that would need to do zone transfers. Other DNS servers should not need to... but be careful as if you get it wrong or miss any secondary nameservers you will block their access!!
On the primary DNS you then go into the SOA for the domain and enter the host name (ns1.whatever.com) of the backup MX into the secondary nameserver box. Save settings.
So this is just the secondary Nameserver correct? I would also need to add the Secondary Nameserver to my domain record correct?
Yes - on the primary DNS you edit the SOA for the domain and add the host name of the secondary DNS.
That helped a TON! Thank you very much...
No problem! Thanks...