PICKUP(8) System Manager's Manual PICKUP(8)
pickup - Postfix local mail pickup
pickup [generic Postfix daemon options]
The pickup 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.
None. The pickup daemon does not interact with the outside world.
The pickup daemon is moderately security sensitive. It runs with fixed
low privilege and can run in a chrooted environment. However, the pro-
gram reads files from potentially hostile users. The pickup 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 pub-
lic service endpoint.
Problems and transactions are logged to syslogd(8).
The pickup 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.
The following main.cf parameters are especially relevant to this pro-
gram. See the Postfix main.cf file for syntax details and for default
values. Use the postfix reload command after a configuration change.
Content inspection controls
The name of a mail delivery transport that filters mail and that
either bounces mail or re-injects the result back into Postfix.
This parameter uses the same syntax as the right-hand side of a
Postfix transport table.
Address to send a copy of each message that enters the system.
Top-level directory of the Postfix queue.
cleanup(8) message canonicalization
master(8) process manager
sendmail(1), postdrop(8) mail posting agent
syslogd(8) system logging
The Secure Mailer license must be distributed with this software.
IBM T.J. Watson Research
P.O. Box 704
Yorktown Heights, NY 10598, USA