redhat man page for qmail-lspawn

qmail-lspawn(8)                                               System Manager's Manual                                              qmail-lspawn(8)

NAME
       qmail-lspawn - schedule local deliveries

SYNOPSIS
       qmail-lspawn defaultdelivery

DESCRIPTION
       qmail-lspawn  reads  a  series  of local delivery commands from descriptor 0, invokes qmail-local to perform the deliveries, and prints the
       results to descriptor 1.  It passes defaultdelivery to qmail-local as the default delivery instruction.

       qmail-lspawn invokes qmail-local asynchronously, so the results may not be in the same order as the commands.

       For each recipient address, qmail-lspawn finds out which local user controls that address.  It first checks the qmail-users  mechanism;  if
       the address is not listed there, it invokes qmail-getpw.  qmail-lspawn then runs qmail-local under the user's uid and gid.  It does not set
       up any supplementary groups.

       qmail-lspawn treats an empty mailbox name as a trash address.

SEE ALSO
       envelopes(5), qmail-users(5), qmail-getpw(8), qmail-send(8), qmail-local(8)

                                                                                                                                   qmail-lspawn(8)