ietf-mxcomp
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Re: record size and wild cards

2004-08-11 00:12:30

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