Original message:                                      To: dude@tommy.gov                   Hi.                   qmail-inject    Fill in the complete envelope and header:                        |             (envelope) from joe@heaven.af.mil to dude@tommy.gov     |             From: joe@heaven.af.mil     |             To: dude@tommy.gov     |                  |             Hi.     V                                qmail-queue     Store message safely on disk.                Trigger qmail-send.     |                  V                                qmail-send      Look at envelope recipient, dude@tommy.gov.     |          Is tommy.gov in locals? No.     |          Is dude@tommy.gov in virtualdomains? No.     |          Is tommy.gov in virtualdomains? Yes: "tommy.gov:fred".     |          Deliver locally to fred-dude@tommy.gov.     V                             qmail-lspawn ./Mailbox                        |          Look at mailbox name, fred-dude.     |          Is fred-dude listed in qmail-users? No.     |          Is there a fred-dude account? No.     |          Is there a fred account? Yes.     |          Is fred's uid nonzero? Yes.     |          Is ~fred visible to the qmailp user? Yes.     |          Is ~fred owned by fred? Yes.     |          Give control of the message to fred.     |          Run qmail-local.     V                             qmail-local fred ~fred fred-dude - dude tommy.gov joe@heaven.af.mil ./Mailbox                                   Does ~fred/.qmail-dude exist? No.                Does ~fred/.qmail-default exist? Yes: "./Mail.tommy".                Write message to ./Mail.tommy in mbox format.