On Mon, Apr 25, 2011 at 02:48:56PM -0700, motty.cruz wrote: > smtpd_recipient_restrictions = permit_mynetworks, > reject_unauth_destination, > reject_unknown_client, <-- unwise, and cause > -- of the reported issue > reject_invalid_hostname, > reject_non_fqdn_hostname, > reject_non_fqdn_sender, > reject_non_fqdn_recipient, > reject_unknown_sender_domain, > reject_unknown_recipient_domain, <-- not useful, the domain is > -- already known to be yours.
The second comment may not apply when your "relay_domains" includes a domain and all its sub-domains, perhaps unwittingly, check the default value and also consider the parent_domain_matches_subdomains parameter. -- Viktor.