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       qpsmtpd-prefork - Preforkin server for qpsmtpd


       qpsmtpd-prefork [options]


       qpsmtpd-prefork  is the qpsmtpd frontend script which binds to the SMTP
       TCP socket, and asynchronously forks new children  in  advance  of  new


       --port port
              Binds to a specific port, instead of the default 2525.

       --user user
              On  startup, switch to run as user instead of the starting user.
              Applies only when started as root (as is normal  when  listening
              on port 25).

       --limit-connections limit
              Accept   at   most   limit  simultaneous  connections.   Inbound
              connections beyondthis limit will be deferred or refused.

       --max-from-ip limit
              Accept at most limit simultaneous connections from any given  IP
              address; does not override --limit-connections, if set.

       --children limit
              Limit  the  total  number  of child processes to limit; once all
              children  are  handling  requests,   further   connections   are

       --idle-children count

              Keep count child processes available, subject to the upper bound
              given via --children.  Specify 0 to disable preforking entirely.

       --interface addr
              Bind  to the local address addr, instead of the default behavior
              of binding to all interfaces.  Can be specified  multiple  times
              to bind to more than one interface or local address.

       --renice-parent delta

              Adjust  the  priority  of  the parent process by delta, yielding
              more CPU time to other processes.  The default is 5.

              Detach from the controlling terminal at startup,  to  run  as  a
              standalone daemon.  See also --pid-file.

       --pid-file filename
              Upon  startup,  and  after  daemonizing if applicable, write the
              process ID to filename, for use by sysvinit control  scripts  or
              similar utilities.


              Update child process names within the process table.

              Print the qpsmtpd release version and exit.

              Be  somewhat  more  verbose about logging during startup (has no
              effect once fully started).

       --help Display commandline help and exit.


       Copyright (c) 2006, SoftScan; based on qpsmtpd-forkserver by Ask  Bjorn
       Hansen <>