Correction, that's: Testing the Stored*Functions*, and the associated lookups,
> postmap -q GOOD_DOMAIN proxy:mysql:/etc/postfix/virtual_mailbox_domains.cf 1 > postmap -q GOOD_USER proxy:mysql:/etc/postfix/virtual_mailbox_maps.cf 1 > postmap -q BAD_USER proxy:mysql:/etc/postfix/virtual_mailbox_maps.cf > > postmap -q BAD_DOMAIN proxy:mysql:/etc/postfix/virtual_mailbox_domains.cf > as intended. Rich