David MacQuigg wrote:
I'm still puzzled as to why we would want wildcards.
It's relevant in two cases: If you have a lot of "user.isp"
vanity catch-all domains you're not necessarily interested
to create an individual sender policy for each "user.isp".
I think of SPF records as a "license" to operate a public
mail server. We don't want every subdomain to automatically
inherit the license.
But we still want the FAILs for a forged xxx(_at_)no-such(_dot_)user(_dot_)isp
SPF is about FAILs. Anything else is only syntactic sugar for
babbling domain owners. That's not the majority opinion here,
but as a receiver, why should I bother to check SPF or similar
schemes without a decent chance to reject some FAILs ?
Bye, Frank