procmail is a powerful
application used to filter incoming mail. It allows users to
define “rules” which can be matched to incoming
mails to perform specific functions or to reroute mail to
alternative mailboxes or email addresses.
procmail can be installed using the
mail/procmail
port. Once
installed, it can be directly integrated into most
MTAs. Consult the MTA
documentation for more information. Alternatively,
procmail can be integrated by adding
the following line to a .forward
in the
home directory of the user:
The following section displays some basic
procmail rules, as well as brief
descriptions of what they do. Rules must be inserted into a
.procmailrc
, which must reside in the
user's home directory.
The majority of these rules can be found in procmailex(5).
To forward all mail from <user@example.com>
to
an external address of <goodmail@example2.com>
:
To forward all mails shorter than 1000 bytes to an external
address of <goodmail@example2.com>
:
To send all mail sent to
<alternate@example.com>
to a mailbox called
alternate
:
To send all mail with a subject of “Spam” to
/dev/null
:
A useful recipe that parses incoming FreeBSD.org
mailing lists and places
each list in its own mailbox:
All FreeBSD documents are available for download at http://ftp.FreeBSD.org/pub/FreeBSD/doc/
Questions that are not answered by the
documentation may be
sent to <freebsd-questions@FreeBSD.org>.
Send questions about this document to <freebsd-doc@FreeBSD.org>.