On 2011-02-21, Robert Schetterer wrote:
you may study this
unknown_hostname_reject_code (default: 450)
The numerical Postfix SMTP server response code when the hostnamespecified with the HELO or EHLO command is rejected by the reject_unknown_helo_hostname restriction.
Do not change this unless you have a complete understanding of RFC 2821.
I don't see how unknown_hostname_reject_code or reject_unknown_helo_hostname will help us here.
unknown_local_recipient_reject_code (default: 550)
The numerical Postfix SMTP server response code when a recipientaddress is local, and $local_recipient_maps specifies a list of lookup tables that does not match the recipient. A recipient address is local when its domain matches $mydestination, $proxy_interfaces or $inet_interfaces.
Yes, am aware unknown_local_recipient_reject_code, and that would be what we wanted if we were running Postfix on the mail-storage server. But we deliver mail directly from the mail front-end to the Dovecot LMTP agent on the mail store.
I forgot to mention that we use Dovecot 2.0.9.