On Mon, Jun 02, 2014 at 04:11:27PM +0100, st...@thornet.co.uk wrote:
> We use sqlgrey as a policy daemon for greylisting. It runs on
> both our mail servers with a shared database on one of them. If the
> database is unavailable for some reason on the main server the backup
> rejects mail with "451 4.3.5 Server configuration problem" Is it
> possible to change the default to accept the mail if the policy daemon
> fails. Most of our users would prefer a bit of extra spam to losing
> genuine mail.
The place to apply such logic is in the policy server itself.
Postfix should not second-guess the policy server verdict.
As noted by others 4XX is not a permanent error, the sending system
should retry the delivery.
--
Viktor.
