Jim Popovitch:
> This config produces the warning/error message:
>
> mail_version = 3.6.3
> smtpd_relay_restrictions = ${{$compatibility_level} <level {1} ? {} :
> {permit_mynetworks, permit_sasl_authenticated,
> defer_unauth_destination}}
> smtpd_recipient_restrictions = check_client_access
> cidr:/etc/postfix/check_client_access.cidr, reject_non_fqdn_sender,
> reject_non_fqdn_recipient, reject_unknown_recipient_domain,
> check_sender_access pcre:/etc/postfix/check_senders.pcre,
> check_recipient_access pcre:/etc/postfix/check_recipients.pcre,
> permit_auth_destination
> compatibility_level = 0
Above, smtpd_relay_restrictions will be empty. This setting is
backwards compatible with Postfix versions that did not have
smtpd_relay_restrictions.
This triggers the error because smtpd_recipient_restrictions does
not contain any of the features that are considered 'required'.
... specify at least one working
instance of: reject_unauth_destination, defer_unauth_destination,
reject, defer, defer_if_permit or check_relay_domains
> This config works, and does not produce the warning/error message:
>
> mail_version = 3.6.3
> smtpd_relay_restrictions = ${{$compatibility_level} <level {1} ? {} :
> {permit_mynetworks, permit_sasl_authenticated,
> defer_unauth_destination}}
> smtpd_recipient_restrictions = check_client_access
> cidr:/etc/postfix/check_client_access.cidr, reject_non_fqdn_sender,
> reject_non_fqdn_recipient, reject_unknown_recipient_domain,
> check_sender_access pcre:/etc/postfix/check_senders.pcre,
> check_recipient_access pcre:/etc/postfix/check_recipients.pcre,
> permit_auth_destination
> compatibility_level = 3.6
Above, smtpd_relay_restrictions is non-empty (permit_mynetworks,
permit_sasl_authenticated, defer_unauth_destination), and
defer_unauth_destination is one of the features that are considered
'required'.
Mystery solved.
Wietse
