terry(_at_)ashtonwoodshomes(_dot_)com wrote:
NO: SPF does not DROP email, it REJECTS it (big difference, with SPF
sender finds out their email was not delivered. A sender of a
DROPPED email may never find out automatically the message was not
received)
No. SPF does neither of those things. SPF allows domain owners to publish
policies concerning which hosts a receiver may consider valid when receiving
mail purporting to be from their domain.
MTAs which incorporate SPF checking can be configured to drop, reject,
bounce, archive, greylist, translate into Mandarin Chinese or any other such
thing with mails that pass, fail or softfail SPF checks, in combination with
whatever other policies the MTA's owner specifies.
We should take care to remember this - SPF is only the framework and imposes
no policy on the MTA owner (unless their SPF checking implementation is very
broken). SPF provides one datapoint.
Peter