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pigeonhole(7)

NAME

   pigeonhole - Overview of the Pigeonhole project's Sieve support for the
   Dovecot secure IMAP and POP3 server

DESCRIPTION

   The Pigeonhole project <http://pigeonhole.dovecot.org> adds support for
   the  Sieve  language (RFC 5228) and the ManageSieve protocol (RFC 5804)
   to the Dovecot Secure IMAP and POP3 Server (dovecot(1)). In the literal
   sense,  a pigeonhole is a a hole or recess inside a dovecot for pigeons
   to nest in.  It is, however, also the name  for  one  of  a  series  of
   small,  open compartments in a cabinet used for filing or sorting mail.
   As a verb, it describes the act of putting an item into  one  of  those
   pigeonholes.   The   name  "Pigeonhole"  therefore  well  describes  an
   important part of the functionality that this project adds to  Dovecot:
   sorting and filing e-mail messages.

   The Sieve language is used to specify how e-mail needs to be processed.
   By  writing  Sieve  scripts,  users  can  customize  how  messages  are
   delivered,  e.g.   whether  they  are  forwarded  or  stored in special
   folders. Unwanted messages can be discarded or rejected, and, when  the
   user  is  not  available,  the  Sieve interpreter can send an automated
   reply. Above all, the Sieve language is meant to be simple,  extensible
   and  system  independent.  And, unlike most other mail filtering script
   languages, it does not allow users to execute arbitrary programs.  This
   is particularly useful to prevent virtual users from having full access
   to the mail store.  The  intention  of  the  language  is  to  make  it
   impossible  for  users to do anything more complex (and dangerous) than
   write simple mail filters.

   Using the ManageSieve protocol, users can upload  their  Sieve  scripts
   remotely,  without needing direct filesystem access through FTP or SCP.
   Additionally, a ManageSieve server  always  makes  sure  that  uploaded
   scripts are valid, preventing compile failures at mail delivery.

   The Pigeonhole project provides the following items:

   *   The  LDA  Sieve  plugin  for  Dovecot's  Local Delivery Agent (LDA)
       (dovecot-lda(1)) that facilitates the actual Sieve  filtering  upon
       delivery.

   *   The  ManageSieve  service  that implements the ManageSieve protocol
       through which users  can  remotely  manage  Sieve  scripts  on  the
       server.

   *   A  plugin  for Dovecot's doveadm(1) command line tool that adds new
       the  new  doveadm-sieve(1)  commands  for   management   of   Sieve
       filtering.

   The  functionality  and  configuration  of the LDA Sieve plugin and the
   ManageSieve service is described in detail in the  README  and  INSTALL
   files  contained  in  the  Pigeonhole  package  and in the Dovecot Wiki
   <http://wiki2.dovecot.org/Pigeonhole>.

   The following command line tools are available outside of doveadm:

   sievec(1)
          Compiles Sieve scripts into a binary  representation  for  later
          execution.

   sieve-test(1)
          The  universal Sieve test tool for testing the effect of a Sieve
          script on a particular message.

   sieve-filter(1)
          Filters all messages in a particular source  mailbox  through  a
          Sieve script.

   sieve-dump(1)
          Dumps  the  content  of  a  Sieve  binary file for (development)
          debugging purposes.

REPORTING BUGS

   Report bugs, including doveconf -n output, to the Dovecot Mailing  List
   <dovecot@dovecot.org>.   Information  about reporting bugs is available
   at: http://dovecot.org/bugreport.html

AUTHOR

   Pigeonhole <http://pigeonhole.dovecot.org> and its  manual  pages  were
   written           by           the          Pigeonhole          authors
   <http://pigeonhole.dovecot.org/doc/AUTHORS>,   mainly   Stephan   Bosch
   <stephan  at  rename-it.nl>,  and  are  licensed under the terms of the
   LGPLv2.1  license,  which  is  the  same  license   as   Dovecot,   see
   <http://dovecot.org/doc/COPYING> for details.

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