Stuart D. Gathman wrote:
CNAME is just another query type
Apparently that's also true for nslookup, I compared
nslookup -q=mx mail.mehnle.net with
nslookup -q=cname mail.mehnle.net
The latter shows only the alias, the former automatically
shows the MX of the alias of the alias. Dito -q=txt etc.
Oops, RfC 1034 says that this exactly as it should be:
| The one exception to this rule is that queries which
| match the CNAME type are not restarted.
Otherwise it only says that software should survive loops
or multiple indirections (section 3.6.2).
Pyspf uses the DNS package which is equivalent to resolv.h,
but implemented in Python (instead of wrapping the C API).
I'd like to have something like that for OS/2 REXX, but I
don't like it so much that I'd implement it ;-) Bye, Frank