> On 6 Jan 2022, at 9:26 pm, John Fawcett <j...@voipsupport.it> wrote:
>
> I'd be very surprised to find that changing the compatibility_level from 2 to
> 3.6, with a default setting for smtpd_relay_restrictions in version 3.6.3
> would resolve the fatal error "in parameter smtpd_relay_restrictions or
> smtpd_recipient_restrictions, specify at least one working instance
> of:reject_unauth_destination, defer_unauth_destination, reject,
> defer,defer_if_permit or check_relay_domains".
This couldn't possibly be the cause. The report is in error.
This can be easily confirmed by changing the compatibility level
to an earlier value.
Removing the compatibility_level setting entirely could introduce
the reported symptoms, if "smtpd_recipient_restrictions" doesn't
have any of the "default deny" rules, and relies on the relay
restrictions to prevent relay abuse.
> However if you can confirm that is the case I will stand corrected.
No amount of "confirmation" can make the impossible true.
--
Viktor.
