wildcard SPF entry w/o wildcard MX entries

[Barry Margolin]

In article <dc37nv$2d9m$1 at sf1.isc.org>,
 "harold1" <harold.blakney at charter.net> wrote:

> Is it possible to use a wildcard SPF entry for the parent domain so
> that we cut down on the number and management of SPF records in DNS?

You would also have to use a wildcard for the MX records.  Wildcards are 
not type-specific, they only get used when there are no explicit records 
for the name.  Since you have explicit MX records for the subdomains, 
wildcards will never be used for those names.

So you will either need explicit SPF records for all of them, or replace 
all the MX records with a wildcard.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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