Charlie Orford:
>I know I am starting to sound like a broken record but I really
>think a sensible, clean method to run a secondary mx that is capable
>of verifying recipients and accepting mail (rather than deferring)
>with or without the primary being up would be a nice feature to
>have.
Indeed, and that is not what "tempfail_action = permit" does. That
explicitly verifies no recipients while the primary is down. I have
seen no credible report that your verify cache contains information
about a significant fraction of the recipient population.
>A postfix feature like: address_verify_sequence =
>address_verification_polling, relay_recipient_maps
That is unnecessary complexity: just use relay_recipient_maps and
be done with it. After all, relay_recipient_maps is the only
available measure against backscatter when the primary is down,
and you already have to maintain it anyway.
Wietse
