On Sat, 14 Feb 2009, Marc Perkel wrote:
Hi,
I have a quick bind question. I want to set the MX records on a domain to
something normal but I want to set the MX for all subdomains to something
else.
example.com mail.example.com
xxx.example.com blackhole.example.com
So do just that:
example.com. IN MX 10 mail.example.com.
xxx.example.com. IN MX 10 blackhole.example.com.
Simple Google search of 'subdomain mx record' explains the usage of
'$ORIGIN' taking the first link off the top:
http://zytrax.com/books/dns/ch8/mx.html