we've got a gateway postfix server with which we provide mails to hosted domains; postfix is configured with Separate Domains with System Accounts (virtual alias domains and virtual alias maps); clients mail server pop up and collect all the their mails; it works great; but one of the client using ETRN and their domain is specified in transport and fast flush domain parameter in main.cf; that also work;
but i want to know for this particular client (who send ETRN) can have a mailbox like other clients? now for this particular client our postfix server defer the mail till it get the ETRN from client; the idea is if mailbox is there i can retrieve/monitor the mails if anything goes wrong ; but is it possible in postfix? help appreciated
