Usually I use "*" in A Record and let Apache+Nginx handle the incoming requests. However today I added a CDN service thus routed most of the requests directy to the CDN sever except two sub-domain for backup purposes.
While waiting for the new settings to be promoted, I am kind of wondering how does this "@" act in A Record? Does it equivalent to "blank" (eg, domian.com,) or as "*"(eg, *.domian.com).
$ORIGIN
variable so it is possible that@
might not map to the domain name. If you look at an automatically generated BIND slave zone file, they make quite heavy use of$ORIGIN
to keep the first field short and help reduce the size of the file.