On Mon, Dec 20, 2004 at 04:52:07PM -0500, Stuart D. Gathman wrote:
|
| There was a proposal for a "zone-cut" default mechanism for SPF clients,
| but it is not widely implemented.
|
it might be easier to implement the default suggested by
gconnor:
if the host has an MX record but no SPF record, use
best_guess "a/24 mx/24 ptr".
if the host has an A record but no MX record and no SPF
record, use best_guess "a/24".
Defining these defaults into the spec would have the effect
of correctly taking care of a majority of cases; only those
cases which are not already correctly described by the above
would have to publish records.