smtpd(1M)         MISC. REFERENCE MANUAL PAGES          smtpd(1M)



NAME
     smtpd - receive incoming SMTP messages

SYNOPSIS
     smtpd [ -n ] [ -H helohost ] [ -h thishost ] [ -L loadlim  ]
     [ -l maxprocs ]

DESCRIPTION
     smtpd is a daemon that normally  runs  while  in  multi-user
     mode,  waiting  for requests from remote hosts to send mail.
     smtpd listens for these requests on  any  TLI-based  network
     for    which    the    SMTP    service    is   defined   (to
     netdirgetbyname(3)).   Normally,  this  will  only  be  the
     ``tcp''  network.  As requests are received, smtpd will fork
     off child smtpd processes to  handle  each  individual  SMTP
     transaction.  The options to smtpd and their meanings are as
     follows:

     -n          Do not create smtpsched processes to process the
                 incoming mail.  Rely on the hourly cron(1) invo-
                 cation of smtpsched instead.

     -H helohost This option can be used to specify the  name  to
                 be  used  for  the host in the initial SMTP HELO
                 message.  If it is not specified, the name  used
                 in  the HELO message defaults to the system node
                 name.

     -h thishost Specify the network name to  be  prepended  onto
                 the sender path in the From line of the message.
                 This option is passed through  to  the  fromsmtp
                 program.

     -L loadlim  Specify the maximum load  at  which  smtpd  will
                 create  children.   If this option is not speci-
                 fied, there is no limit to  the  load  at  which
                 children  may  run.   The  load is determined by
                 reading the kernel variable avenrun.

     -l maxprocs This option  is  used  to  specify  the  maximum
                 number  of children of smtpd that can be running
                 at once.  Each child handles one SMTP  conversa-
                 tion.  If this option is not specified, there is
                 no limit to the number of children that may run.
                 Mail  that  is successfully received is piped to
                 the fromsmtp command, which in turn delivers the
                 mail  by  piping  it  to  rmail.   A  log of all
                 smtpd's  activities  is   kept   in   the   file
                 /var/spool/smtpq/LOG.

FILES
     /dev/kmem                To get  the  current  machine  load



                          Last change:                          1

smtpd(1M)         MISC. REFERENCE MANUAL PAGES          smtpd(1M)



                              (avenrun)

     /etc/services            List  of  TCP/UDP  services   (SMTP
                              should be 25/tcp)

     /etc/net/*/services      List of other  TLI  networks'  ser-
                              vices

     /usr/lib/mail/surrcmd/fromsmtp
                              Where incoming mail is piped to

     /var/spool/smtpq/LOG     Log of smtpd transactions

SEE ALSO
     cron(1M), fromsmtp(1M), smtp(1M)








































                          Last change:                          2