rupert gkdbdrsgmailcom ok got running add exception mysqlvirtual_mailhostscf query returns accounts local host way add local hostname dynamically query select mailhost users emails mailhostbackendb1fra1mailcluster thx lot r mon feb 11 2008 1122 mouss wrote rupert wrote testlocal accounts machines think says postfixsmtp25324 264f71b3004b relaynone delay004 delays0020010010 dsn546 statusbounced mail backenda1fra1mailcluster loops back missing right transport knows mail belongs dont know deliver mail belongs must list domain mydestination virtual_mailbox_domains domain supposed virtual_mailbox_domains test lookup postmap q testlocal mysqletcpostfixmysqlvirtual_domainscf return something sauis something transport entry something like loca_tranport thought mail relayed another server wed 06 aug 2008 023416 0100 postfix courier proxy cluster wont deliver mails remote hosts loops back