John Levine wrote:
The problem with _marid subdomains is that they break
wildcards, since DNS wildcards don't permit _marid.*.foo.com
I'm not exactly sure what you're talking about, my nslookup
is not exactly new - what says 5.42 UCB 3/3/91 - and it has
no problem with wildcards:
_marid.xyzzy.claranet.de text = "v=spf1 redirect=claranet.de"
xyzzy.claranet.de text = "v=spf1 redirect=claranet.de"
Some of us have per-user subdomains implemented with
wildcards, and there's no good workaround.
xyzzy.claranet.de _is_ a per user vanity host, it's only used
for addresses @xyzzy (catch-all), and for http://www.xyzzy
So if you have a sender policy for *.example.org now and it
covers foo.example.org, then it would automatically cover
_marid.foo.example.org
Bye, Frank