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Pigeonhole Sieve Interpreter ============================ The <Pigeonhole project> [Pigeonhole.txt] provides Sieve support as a plugin for Dovecot's <Local Delivery Agent (LDA)> [LDA.txt] and also for its <LMTP.txt> service. The plugin implements a Sieve [http://www.sieve.info] interpreter, which filters incoming messages using a script specified in the Sieve language (RFC 5228 [http://tools.ietf.org/html/rfc5228/]). The Sieve script is provided by the user and, using that Sieve script, the user can customize how incoming messages are handled. Messages can be delivered to specific folders, forwarded, rejected, discarded, etc. Configuration and Use --------------------- * <Download and Installation> [Pigeonhole.Installation.txt] * <Sieve Interpreter Configuration> [Pigeonhole.Sieve.Configuration.txt] * <Sieve Usage Information> [Pigeonhole.Sieve.Usage.txt] * <Sieve Script Examples> [Pigeonhole.Sieve.Examples.txt] * <Sieve Interpreter Plugins> [Pigeonhole.Sieve.Plugins.txt] * <Sieve Troubleshooting> [Pigeonhole.Sieve.Troubleshooting.txt] Supported Features ------------------ Sieve language has various <extensions> [Pigeonhole.Sieve.Extensions.txt]. You can find more information about the extensions from the Sieve Mail Filtering Language Charter [http://www.ietf.org/html.charters/sieve-charter.html] or the Sieve.info wiki page [http://www.sieve.info/]. Note that Sieve doesn't support running external programs. The Pigeonhole Sieve interpreter recognizes the following Sieve extensions: * +-----------------------------------------------------------------+------------+----------+----------------+ | *Extension* | *Support | *Default | *Purpose* | | | Status* | Enabled* | | +-----------------------------------------------------------------+------------+----------+----------------+ | body [http://tools.ietf.org/html/rfc5173/] | supported | yes | Allows | | | | | evaluating the | | | | | body of a | | | | | message | +-----------------------------------------------------------------+------------+----------+----------------+ | copy [http://tools.ietf.org/html/rfc3894/] | supported | yes | Allows storing | | | | | and forwarding | | | | | messages | | | | | without | | | | | canceling the | | | | | implicit keep | +-----------------------------------------------------------------+------------+----------+----------------+ | date [http://tools.ietf.org/html/rfc5260#section-4] | supported | yes | Adds the | | | (v0.1.12+) | | ability to test| | | | | date and time | | | | | values in | | | | | various ways | +-----------------------------------------------------------------+------------+----------+----------------+ | duplicate [http://tools.ietf.org/html/rfc7352] | supported | yes | Allows | | | (v0.4.3+) | | detecting | | | | | duplicate | | | | | message | | | | | deliveries | +-----------------------------------------------------------------+------------+----------+----------------+ | editheader [http://tools.ietf.org/html/rfc5293/] | supported | no | Adds the | | | (v0.3.0+) | | ability to add | | | | | and remove | | | | | message header | | | | | fields | +-----------------------------------------------------------------+------------+----------+----------------+ | encoded-character | supported | yes | Allows encoding| | [http://tools.ietf.org/html/rfc5228#section-2.4.2.4] | | | special | | | | | characters | | | | | numerically | +-----------------------------------------------------------------+------------+----------+----------------+ | enotify [http://tools.ietf.org/html/rfc5435/] | supported | yes | Provides the | | | (v0.1.3+) | | ability to send| | | | | notifications | | | | | by various | | | | | means | | | | | (currently only| | | | | mailto) | +-----------------------------------------------------------------+------------+----------+----------------+ | envelope [http://tools.ietf.org/html/rfc5228#section-5.4] | supported | yes | Allows | | | | | evaluating | | | | | envelope parts,| | | | | i.e. sender and| | | | | recipient | +-----------------------------------------------------------------+------------+----------+----------------+ | environment [http://tools.ietf.org/html/rfc5183/] | supported | yes | Allows testing | | | (v0.4.0+) | | against various| | | | | labeled values | | | | | from the | | | | | execution | | | | | environment | +-----------------------------------------------------------------+------------+----------+----------------+ | fileinto [http://tools.ietf.org/html/rfc5228#section-4.1] | supported | yes | Allows storing | | | | | messages in | | | | | folders other | | | | | than INBOX | +-----------------------------------------------------------------+------------+----------+----------------+ | foreverypart [http://tools.ietf.org/html/rfc5703#section-3] | supported | yes | Allows | | | (v0.4.14+) | | iterating | | | | | through the | | | | | message's MIME | | | | | parts | +-----------------------------------------------------------------+------------+----------+----------------+ | ihave [http://tools.ietf.org/html/rfc5463/] | supported | yes | Adds the | | | (v0.2.4+) | | ability to test| | | | | for support of | | | | | Sieve | | | | | extensions and | | | | | dynamically | | | | | invoke their use| +-----------------------------------------------------------------+------------+----------+----------------+ | imap4flags [http://tools.ietf.org/html/rfc5232/] | supported | yes | Allows adding | | | | | IMAP flags to | | | | | stored messages| +-----------------------------------------------------------------+------------+----------+----------------+ | imapsieve [http://tools.ietf.org/html/rfc6785/] | supported | no | Provides access| | | (v0.4.14+) | (plugin) | to special | | | | | environment | | | | | items when | | | | | executing at | | | | | IMAP events | +-----------------------------------------------------------------+------------+----------+----------------+ | include [http://tools.ietf.org/html/rfc6609/] | supported | yes | Allows | | | (v0.4.0+) | | including other| | | | | Sieve scripts | +-----------------------------------------------------------------+------------+----------+----------------+ | index [http://tools.ietf.org/html/rfc5260#section-6] | supported | yes | Allows matching| | | (v0.4.7+) | | specific header| | | | | field instances| | | | | by index | +-----------------------------------------------------------------+------------+----------+----------------+ | mailbox [http://tools.ietf.org/html/rfc5490#section-3] | supported | yes | Provides a | | | (v0.1.10+) | | mailbox | | | | | existence check| | | | | and allows | | | | | creating | | | | | mailboxes upon | | | | | fileinto | +-----------------------------------------------------------------+------------+----------+----------------+ | mboxmetadata [http://tools.ietf.org/html/rfc5490] | supported | no | Provides access| | | (v0.4.7+) | | to mailbox | | | | | METADATA entries| +-----------------------------------------------------------------+------------+----------+----------------+ | mime [http://tools.ietf.org/html/rfc5703#section-4] | supported | yes | Allows testing | | | (v0.4.14+) | | parts of | | | | | structured MIME| | | | | header fields | +-----------------------------------------------------------------+------------+----------+----------------+ | extracttext [http://tools.ietf.org/html/rfc5703#section-7] | supported | yes | Allows | | | (v0.4.14+) | | extracting text| | | | | from individual| | | | | message MIME | | | | | parts | +-----------------------------------------------------------------+------------+----------+----------------+ | regex | supported | yes | Provides | | [http://tools.ietf.org/html/draft-murchison-sieve-regex-08/] | | | regular | | | | | expression | | | | | match support | +-----------------------------------------------------------------+------------+----------+----------------+ | reject [http://tools.ietf.org/html/rfc5429#section-2.2] | supported | yes | Allows | | | | | rejecting | | | | | messages with a| | | | | rejection | | | | | bounce message | +-----------------------------------------------------------------+------------+----------+----------------+ | relational [http://tools.ietf.org/html/rfc5231/] | supported | yes | Provides | | | | | relational | | | | | match support | +-----------------------------------------------------------------+------------+----------+----------------+ | servermetadata [http://tools.ietf.org/html/rfc5490] | supported | no | Provides access| | | (v0.4.7+) | | to server | | | | | METADATA entries| +-----------------------------------------------------------------+------------+----------+----------------+ | spamtest [http://tools.ietf.org/html/rfc5235/] | supported | no | Implements a | | | (v0.1.16+) | | uniform way to | | | | | test against | | | | | headers added | | | | | by spam filters| +-----------------------------------------------------------------+------------+----------+----------------+ | subaddress [http://tools.ietf.org/html/rfc5233/] | supported | yes | Allows testing | | | | | against | | | | | delimited | | | | | elements of the| | | | | local part of | | | | | addresses | +-----------------------------------------------------------------+------------+----------+----------------+ | vacation [http://tools.ietf.org/html/rfc5230/] | supported | yes | Provides | | | | | auto-responder | | | | | functionality, | | | | | e.g. for when | | | | | the user is on | | | | | vacation | +-----------------------------------------------------------------+------------+----------+----------------+ | vacation-seconds [http://tools.ietf.org/html/rfc6131/] | supported | no | Extends | | | (0.2.3+) | | vacation | | | | | extension with | | | | | the ability to | | | | | send vacation | | | | | responses with | | | | | intervals of | | | | | seconds rather | | | | | than days | +-----------------------------------------------------------------+------------+----------+----------------+ | variables [http://tools.ietf.org/html/rfc5229/] | supported | yes | Adds variables | | | | | support to the | | | | | language | +-----------------------------------------------------------------+------------+----------+----------------+ | virustest [http://tools.ietf.org/html/rfc5235/] | supported | no | Implements a | | | (v0.1.16+) | | uniform way to | | | | | test against | | | | | headers added | | | | | by virus | | | | | scanners | +-----------------------------------------------------------------+------------+----------+----------------+ | imapflags(obsolete draft | deprecated | no | Old version of | | [http://tools.ietf.org/html/draft-melnikov-sieve-imapflags-03]) | | | imap4flags (for| | | | | backwards | | | | | compatibility | | | | | with CMU Sieve)| +-----------------------------------------------------------------+------------+----------+----------------+ | notify (obsolete draft | deprecated | no | Old version of | | [http://tools.ietf.org/html/draft-martin-sieve-notify-01]) | | | enotify (for | | | | | backwards | | | | | compatibility | | | | | with CMU Sieve)| +-----------------------------------------------------------------+------------+----------+----------------+ The following Dovecot-specific Sieve extensions are available for the Pigeonhole Sieve interpreter: * +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | *Extension* | *Support Status* | *Default | *Purpose* | | | | Enabled* | | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.debug | supported (v0.3.0+) | no | Allows logging debug messages | | [https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-debug.txt] | | | | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.environment | supported (v0.4.14+) | no | Extends the standard "environment" | | [https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-dovecot-environment.txt] | | | extension with extra items and a | | | | | variables namespace for direct access | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.execute | <plugin> | no | Implements executing a pre-defined set | | [https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-extprograms.txt] | [Pigeonhole.Sieve.Plugins.Extprograms.txt] | | of external programs with the option to| | | (v0.3+) | | process string data through the | | | | | external program | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.extdata | <plugin> | no | Allows a Sieve script to lookup | | [http://hg.rename-it.nl/pigeonhole-0.2-sieve-extdata/raw-file/tip/doc/rfc/spec-bosch-sieve-external-data.txt] | [Pigeonhole.Sieve.Plugins.Extdata.txt] | | information from a datasource external | | | | | to the script | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.filter | <plugin> | no | Implements filtering messages through a| | [https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-extprograms.txt] | [Pigeonhole.Sieve.Plugins.Extprograms.txt] | | pre-defined set of external programs | | | (v0.3+) | | | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.pipe | <plugin> | no | Implements piping messages to a | | [https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-extprograms.txt] | [Pigeonhole.Sieve.Plugins.Pipe.txt] (v0.2),| | pre-defined set of external programs | | | <plugin> | | | | | [Pigeonhole.Sieve.Plugins.Extprograms.txt] | | | | | (v0.3+) | | | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ | vnd.dovecot.report | supported (v0.4.14+) | no | Implements sending Messaging Abuse | | [https://raw.githubusercontent.com/dovecot/pigeonhole/master/doc/rfc/spec-bosch-sieve-report.txt] | | | Reporting Format (MARF) reports (RFC | | | | | 5965 | | | | | [http://tools.ietf.org/html/rfc5965/]) | +----------------------------------------------------------------------------------------------------------------+--------------------------------------------+----------+----------------------------------------+ Please note that not all extensions are enabled by default, as shown in the table above. Deprecated extensions, extensions that add the ability to change messages, extensions that require explicit configuration and extensions that are still under development are not enabled without explicit <configuration> [Pigeonhole.Sieve.Configuration.txt]. This means that the 'sieve_extensions' or 'sieve_global_extensions' settings need to be adjusted accordingly. Also, for <plugins> [Pigeonhole.Sieve.Plugins.txt] it is not enough to add the plugin name to the 'sieve_plugins' setting; the extensions introduced by the plugin also need to be enabled explicitly. ManageSieve server ------------------ To give users the ability to upload their own Sieve scripts to your server, i.e. without the need for shell or FTP access, you can use the Manage ''Sieve protocol. This is also provided by the <Pigeonhole.txt> project. It is available as a separate Dovecot service. Its configuration and use is explained on the <Pigeonhole ManageSieve page> [Pigeonhole.ManageSieve.txt]. (This file was created from the wiki on 2019-06-19 12:42)
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