spf-discuss
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Re: The Case For XML in "Caller-ID for Email"

2004-01-23 18:34:23
On Fri, Jan 23, 2004 at 07:31:11PM -0600, Phil Howard wrote:
| 
| SPF can do this now with the "exists" mechanism.  My only problem with it
| is that by using NXDOMAIN for a negative answer, it doesn't get to cache
| very well.  I'd like to see it _also_ say that an A record in 0/8 space
| also means negative (but can be cached as per the TTL value).

That's a very good suggestion.  I will do it if the DNSBL providers
switch to that semantic.  (We want to be able to express
-exists:%{ir}.sbl.spamhaus.org)

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