pickup



PICKUP(8)                                                            PICKUP(8)




NAME

       pickup - Postfix local mail pickup


SYNOPSIS

       pickup [generic Postfix daemon options]


DESCRIPTION

       The  pickup(8)  daemon  waits  for hints that new mail has been dropped
       into the maildrop directory, and feeds it into the  cleanup(8)  daemon.
       Ill-formatted files are deleted without notifying the originator.  This
       program expects to be run from the master(8) process manager.


STANDARDS

       None. The pickup(8) daemon does not interact with the outside world.


SECURITY

       The pickup(8) daemon is moderately security  sensitive.  It  runs  with
       fixed  low  privilege  and can run in a chrooted environment.  However,
       the program reads files from potentially hostile users.  The  pickup(8)
       daemon opens no files for writing, is careful about what files it opens
       for reading, and does not actually touch any data that is sent  to  its
       public service endpoint.


DIAGNOSTICS

       Problems and transactions are logged to syslogd(8).


BUGS

       The  pickup(8)  daemon  copies mail from file to the cleanup(8) daemon.
       It could avoid message copying overhead by sending  a  file  descriptor
       instead  of  file  data, but then the already complex cleanup(8) daemon
       would have to deal with unfiltered user data.


CONFIGURATION PARAMETERS

       As the pickup(8) daemon is a relatively long-running process, up to  an
       hour  may  pass  before a main.cf change takes effect.  Use the command
       "postfix reload" command to speed up a change.

       The text below provides only a parameter summary. See  postconf(5)  for
       more details including examples.


CONTENT INSPECTION CONTROLS

       content_filter (empty)
              The name of a mail delivery transport that filters mail after it
              is queued.

       receive_override_options (empty)
              Enable or disable recipient validation, built-in content filter-
              ing, or address mapping.


MISCELLANEOUS CONTROLS

       config_directory (see postconf -d output)
              The  default  location of the Postfix main.cf and master.cf con-
              figuration files.

       daemon_timeout (18000s)
              How much time a Postfix daemon process  may  take  to  handle  a
              request before it is terminated by a built-in watchdog timer.

       ipc_timeout (3600s)
              The  time  limit  for  sending  or receiving information over an
              internal communication channel.

       line_length_limit (2048)
              Upon input, long lines are chopped up into  pieces  of  at  most
              this length; upon delivery, long lines are reconstructed.

       max_idle (100s)
              The  maximum  amount of time that an idle Postfix daemon process
              waits for the next service request before exiting.

       max_use (100)
              The maximal number of connection requests before a Postfix  dae-
              mon process terminates.

       process_id (read-only)
              The process ID of a Postfix command or daemon process.

       process_name (read-only)
              The process name of a Postfix command or daemon process.

       queue_directory (see postconf -d output)
              The location of the Postfix top-level queue directory.

       syslog_facility (mail)
              The syslog facility of Postfix logging.

       syslog_name (postfix)
              The  mail  system  name that is prepended to the process name in
              syslog records, so that "smtpd"  becomes,  for  example,  "post-
              fix/smtpd".


SEE ALSO

       cleanup(8), message canonicalization
       sendmail(1), Sendmail-compatible interface
       postdrop(1), mail posting agent
       postconf(5), configuration parameters
       master(5), generic daemon options
       master(8), process manager
       syslogd(8), system logging


LICENSE

       The Secure Mailer license must be distributed with this software.


AUTHOR(S)

       Wietse Venema
       IBM T.J. Watson Research
       P.O. Box 704
       Yorktown Heights, NY 10598, USA



                                                                     PICKUP(8)

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