v0.4.15 07-07-2016 Stephan Bosch <stephan@rename-it.nl>
* vacation extension: The sieve_user_email setting is now used in the check
for implicit delivery.
- imapsieve plugin: For any mail transaction, the mailbox was opened a second
time, even if no mailbox rule matched. This was unintentional, useless and
caused problems when the imapsieve plugin was used with other plugins like
acl.
- extprograms plugin: Significantly improved error handling. No stream errors
were logged.
- extprograms plugin: Fixed bug in handling of result code from remote program
(script service).
- extprograms plugin: Connection to remote program service was not retried.
- Several small fixes based on static analysis.
- Fixed handling of quoted string localparts in email addresses.
v0.4.14 26-04-2016 Stephan Bosch <stephan@rename-it.nl>
* The address test now allows specifying the X-Original-To header.
+ Implemented the Sieve imapsieve extension and its IMAP counterpart
(RFC 6785) as a set of plugins. This allows running Sieve scripts at IMAP
activity, rather than at delivery. There are also facilities for the
familiar sieve_before/sieve_after administrator scripts. A user script is
defined for a mailbox using an IMAP METADATA entry, whereas administrator
scripts are configured using mailbox matching rules defined in the plugin
settings.
+ Adjusted the Sieve ihave extension to allow capability tests to be performed
at runtime. This way, scripts can be written that work both at delivery and
from IMAP.
+ Implemented support for runtime trace debugging. This means that detailed
information about which commands, actions and tests are performed is written
to a file. That file is created in the configured directory, but only if
that directory exists. This way, a particular user can be easily singled out
for debugging. This works much like the Dovecot rawlog facility. The trace
output is identical to what is produced using sieve-test with its "-t"
command line option.
+ Added a "sieve_user_email" setting that configures the user's primary email
address. This is mainly useful to have a user email address available in
IMAP, where envelope data is unavailable.
+ Implemented the dovecot-specific "vnd.dovecot.report" extension. This allows
sending report messages in the Message Abuse Reporting Format (RFC 5965).
- extprograms plugin: Fixed epoll() panic caused by closing the output FD
before the output stream.
- Made sure that the local part of a mail address is encoded properly using
quoted string syntax when it is not a dot-atom.
It is v0.4.12 release of Pigeonhole for Dovecot v2.2.21.
v0.4.12 06-02-2016 Stephan Bosch <stephan@rename-it.nl>
+ Implemented the Sieve extracttext extension (RFC 5703; Section 7). It is now
possible to extract body text from a message into a variable.
* Increased ABI version due to changes in the Sieve interpreter's object
definitions.
- multiscript: Fixed bug in handling of (implicit) keep; final keep action was
always executed as though there was a failure. This caused the keep action
to revert back to the initial message, causing editheader actions to be
ignored.
- managesieve-login: Fixed proxy to allow SASL mechanisms other than PLAIN.
Before, the proxy would fail if the server did not support the PLAIN
mechanism.
- ldap storage: Prevent segfault occurring when assigning certain (global)
configuration options.
v0.4.11 08-01-2016 Stephan Bosch <stephan@rename-it.nl>
- Sieve mime extension: Fixed the header :mime :anychild test to work properly
outside a foreverypart loop.
- Several fixes in message body part handling:
- Fixed assert failure occurring when text extraction is attempted on a
empty or broken text part.
- Fixed assert failure in handling of body parts that are converted to text.
- Fixed header unfolding for (mime) headers parsed from any mime part.
- Fixed trimming for (mime) headers parsed from any mime part.
- Fixed erroneous changes to the message part tree structure performed when
re-parsing the message.
- LDA Sieve plugin: Fixed logging of actions; sometimes the configured log
format was not followed.
- LDA Sieve plugin: Fixed bug in error handling of script storage
initialization.
- Sieve Extprograms plugin: Ignored ENOTCONN error in shutdown(fd, SHUT_WR)
call.
- Fixed duplication of discard actions in the script result. Each discard was
counted as a separate action, which means that action limit would be crossed
too early.
- Made sure that quota errors never get logged as errors in syslog.
- Fixed handling of implicit keep for a partially executed transaction that
yielded a temporary failure.
- Fixed handling of global errors. If master and user error handler were
identical, in some cases the log message could be lost.
- Fixed AIX compile issue in message body parser.
v0.4.10 13-12-2015 Stephan Bosch <stephan@rename-it.nl>
+ Implemented the Sieve mime and foreverypart extensions (RFC 5703). These
are fully implemented. The interaction with the editheader extension needs
some work, but this should not influence most uses; i.e., changes by the
editheader extension are not always visible using foreverypart/mime.
+ Sieve body extension: Properly implemented the `:text' body transform. It
now extracts text for HTML message parts.
+ Sieve enotify extension: mailto method: Implemented the
sieve_notify_mailto_envelope_from setting. This allows configuring the
source of the notification sender address for e-mail notifications. This is
similar to what already can be configured for redirect.
+ Added a sieve_enabled (defaults to 'yes') setting that allows explicitly
disabling Sieve processing for particular users. This used to be possible by
setting `sieve=', but ever since the sieve_before, sieve_after and
sieve_default settings were added, this method was not reliable anymore.
- variables extension: Fixed handling of empty string by the `:length' set
modifier. An empty string yielded an empty string rather than "0".
- Fixed memory leak in the Sieve script byte code dumping facility. Extension
contexts were never actually freed.
- Fixed handling of implicit keep when the last Sieve script is a global one.
In that case the implicit keep action was executed in global context, which
could mean that trivial (quota) errors ended up in the system log file,
rather than the user log file.
- doveadm sieve plugin: Fixed crashes caused by incorrect context allocation
in the sieve command implementations.
* Properly implemented checking of ABI version for Sieve interpreter
plugins, much like Dovecot itself does for plugins. This will prevent
plugin ABI mismatches.
+ Implemented a vnd.dovecot.environment extension. This builds upon the
standard environment extension and adds a few more environment items,
such as username and default mailbox. It also creates a variables
namespace so that environment items can be accessed directly. I am
still thinking about more environment items that can be added.
+ Sieve extprograms plugin: Made line endings of the input passed to the
external programs configurable. This can be configured separately for
each of the three extensions.
+ ManageSieve: Implemented proxy XCLIENT support. This allows the proxy
to pass client information to the back-end.
- ManageSieve: Fixed an assert failure occurring when a client
disconnects during the GETSCRIPT command.
- doveadm sieve plugin: Fixed incorrect initialization of mail user.
This caused a few memory leaks.
- sieve-filter command line tool: Fixed handling of failure-related
implicit keep when there is an explicit default destination folder.
This caused message duplication.
- lib-sieve: Fixed bug in RFC5322 header folding. Words longer than the
optimal line length caused empty lines in the output, which would
break the resulting message header. This surfaced in References:
headers with very long message IDs.
v0.4.8 15-05-2015 Stephan Bosch <stephan@rename-it.nl>
* LDA Sieve plugin: Dovecot changed the deliver_log_format setting to include
%{delivery_time}. This prompted changes in Pigeonhole that make this release
dependent on Dovecot v2.2.17.
+ Implemented magic to make sieve_default script visible from ManageSieve
under a configurable name. This way, users can see the default rules, edit
them and store a private adjusted version. This could also be achieved by
copying the default script into the user's script storage, but updates to
the global sieve_default script would be ignored that way.
+ ManageSieve: Implemented support for reporting command statistics at
disconnect. Statistics include the number of bytes and scripts uploaded/
downloaded/checked and the number of scripts deleted/renamed.
- Fixed problem in address test: erroneously decoded mime-encoded words in
address headers.
- extprograms plugin: Fixed failure occurring when connecting to script
service without the need to read back the output from the external program.
- Fixed bug in script storage path normalization occurring with relative
symbolic links below root.
- Fixed and updated various parts of the documentation
- ManageSieve: Used "managesieve" rather than "sieve" as login service name,
which means that all managesieve-specific settings where ignored.
- Managesieve: Storage quota was not always enforced properly for scripts
uploaded as quoted string. Nobody uses that, but it is allowed in the
specification and we support it, so it should work properly.
needed to dovecot2-pigeonhole compatible with Dovecot 2.2.16.
v0.4.7 19-03-2015 Stephan Bosch <stephan@rename-it.nl>
* editheader extension: Made protection against addition and deletion of
headers configurable separately. Also, the `Received' and `Auto-Submitted'
headers are no longer protected against addition by default.
* Turned message envelope address parse errors into warnings.
* The interpreter now accepts non-standard domain names, e.g. containing '_'.
+ Implemented the Sieve index extension (RFC 5260).
+ Implemented support for the mboxmetadata and servermetadata extensions
(RFC 5490).
+ Implemented new sieve commands for the doveadm command line utility. These
commands are currently limited to ManageSieve operations, but the other
current sieve tools will be migrated to doveadm in the near future as well.
+ Added more debug output about binary up-to-date checking.
+ Added script metadata to binary dump output.
- Fixed Sieve script binary up-to-date checking by normalizing the script
location.
- The Sieve interpreter now flushes the duplicate database during start phase
of result execution rather than commit phase. This makes sure locks on the
duplicate database are released as soon as possible, preventing contention.
- Performed a few optimizations in the lexical scanner of the language.
- Fixed bug in `:matches' match-type that made a pattern without
wildcards match as if there were a '*' at the beginning.
- Fixed crash in validation of the string parameter of the comparator tag.
- extprograms extension: Made sure supplemental group privileges are also
dropped. This was a problem reported by Debian lintian.
- Fixed bug in handling of binary errors for action side-effects and message
overrides.
- file script storage: Restructured storage initialization to address
backwards compatibility issues.
- dict script storage: Fixed small memory allocation bug.
Version 0.4.5 introduced one new 'feature', but it caused build
problems. This release fixes that. If you've successfully installed
0.4.5, you do not need to upgrade.
Changelog v0.4.6:
- After make distclean, the distributed tarball would fail to recompile.
This causes problems for some distribution builds.
Changelog v0.4.5:
+ Added a Pigeonhole version banner to doveconf output. This way, future
bug reports will also include Pigeonhole version information.
- Fixed handling of implicit keep. Last version erroneously reported
that implicit keep succeeded after an earlier failure, while it in
fact had failed. Particularly occurred for mailbox quota errors.
- Fixed segfault occurring on SunOS systems when there is no active
script.
Changelog v0.4.4:
* Added support for Japanese mail addresses with dots at non-standard
places in localpart.
* Changed handling of ENOSPACE into a normal temporary failure and added
handling of ENOQUOTA as a user error.
* Restructured result execution, so that all actions which involve mail
storage are always committed before all others.
+ Implemented support for generic Sieve storages. Using alternative
storages now also possible for sieve_before/sieve_after.
+ Implemented storage driver for retrieving Sieve scripts from LDAP.
This currently cannot be used with ManageSieve.
+ Implemented sieve_redirect_envelope_from setting, which allows
configuring the envelope sender of redirected messages.
- Fixed handling of mail storage errors occurring while evaluating the
input message.
- managesieve-login:
- Removed bogus ALERT response code returned for AUTHENTICATE
command.
- Fixed handling of invalid initial response argument to AUTHENTICATE
command.
- Fixed handling of stream errors in lexical scanner.
- Fixed handling of SMTP errors. Permanent and temporary errors were
mixed up.
- Fixed several problems reported by CLang 3.4.
- duplicate extension: Fixed erroneous compile error about conflicting
tags when `:handle' argument was used last.
- relational extension: Fixed error handling of `:value' match.
- editheader extension: Fixed header unfolding and header iteration.
- mailbox extension: Fixed the `:create' tag, which erroneously
subscribed an existing folder.
- extprograms plugin: Fixed handling of error codes.
- doveadm-sieve plugin: Fixed several bugs. Synchronization of symbolic
link in the file storage should now also work properly.
* Editheader extension: Made control characters allowed for editheader,
except NUL. Before, this would cause a runtime error.
+ Upgraded Dovecot-specific Sieve "vnd.dovecot.duplicate" extension to
match the new draft "duplicate" extension.
- Fixed sieve_result_global_log_error to log only as i_info in
administrator log (syslog) if executed from multiscript context.
- Sieve redirect extension: Adjusted loop detection to show leniency to
resent messages.
- Sieve include extension: Fixed problem with handling of duplicate
includes with different parameters :once or :optional.
- Sieve spamtest/virustest extensions: Tests were erroneously performed
against the original message. When used together with extprograms
filter to add the spam headers, the changes were not being used by
the spamtest and virustest extensions.
- Deprecated Sieve notify extension: Fixed segfault problems in message
string substitution.
- ManageSieve: Fixed active link verification to handle redundant path
slashes correctly.
- Sieve vacation extension:
- Fixed interaction of sieve_vacation_dont_check_recipient with
sieve_vacation_send_from_recipient setting.
- Fixed log message for discarded response.
- Sieve extprograms plugin:
- Forgot to disable the alarm() timeouts set for script execution.
- Fixed fd leak and handling of output shutdown.
- Fixed 'Bad filedescriptor' error occurring when disconnecting
script client.
- Made sure that programs are never forked with root privileges.
* Incompatible change in Sieve doveadm plugin: the root attribute for
Sieve scripts is changed. Make sure that you update both sides of a
dsync setup simultaneously when Sieve is involved, otherwise
synchronization will likely fail.
+ Added support for sending Sieve vacation replies with an actual
sender, rather than the default <> sender. Check the updated
doc/extensions/vacation.txt for more information.
- Fixed a binary code read problem in the `set' command of the Sieve
variables extension. Using the set command with a modifier and an
empty string value would cause code corruption problems while running
the script.
- Various fixes for doveadm-sieve plugin, mostly crashes. These include
a fix for the `Invalid value for default sieve attribute' problem.
- Various fixes for compiler and static analyzer warnings, e.g. as
reported by CLang and on 32 bit systems.
- Fixed the implementation of the new :options flag for the Sieve
include extension.
- Fixed potential segfault bug at deinitialization of the lda-sieve
plugin.
- Fixed messed up hex output for sieve-dump tool.
Subject: [Dovecot-news] Released Pigeonhole v0.4.1 for Dovecot v2.2.4.
Date: Wed, 03 Jul 2013 22:15:31 +0200
To: dovecot-news@dovecot.org, Dovecot Mailing List <dovecot@dovecot.org>
Reply-To: dovecot@dovecot.org
Content-Transfer-Encoding: 7bit
Hello Dovecot users,
Now that I am not preoccupied anymore, I quickly release a new version
of Pigeonhole for Dovecot v2.2. This consists mainly of bug fixes. One
new feature is that the Sieve plugin will try to pass temporary
failures (e.g. from mail storage) back to LDA/LMTP as much as
possible. However, this change turned out a little bigger than I would
have liked, so experiment with it a bit before you deploy it in
production.
Changelog v0.4.1:
+ Added support for handling temporary failures. These are passed back
to LDA/LTMP to produce an appropriate response towards the MTA.
- Sieve storage: Removed PATH_MAX limitation for active symlink. This
caused problems for GNU/Hurd.
- Fixed line endings in X-Sieve headers added by redirect command.
- ManageSieve: Fixed '[' ']' stupidity for response codes (only
happened before login).
- Fixed setting name in example-config/conf.d/20-managesieve.conf.
- Sieve extprograms plugin: Fixed interaction between pipe command and
remote script service. The output from the script service was never
read, causing a broken pipe error at the script service. Apparently,
this was broken since the I/O handling for extprograms was last
revised.
- Fixed assertion failure due to datastack problem in message header
composition.
v0.4.0 09-05-2013 Stephan Bosch <stephan@rename-it.nl>
+ Added doveadm-sieve plugin that provides the possibility to synch Sieve
scripts using doveadm sync along with the user's mailboxes.
+ Added the Sieve extprograms plugin to the main Pigeonhole package. It is
still a plugin, but it is now included so that a separate compile is no
longer necessary and distributors are likely to include it. The extprograms
plugin provides Sieve language extensions that allows executing
(administrator-controlled) external programs for message delivery,
message filtering and string manipulation. Refer to
doc/plugins/sieve_extprograms.txt for more information.
+ Added debug message showing Pigeonhole version at initialization. Makes it
very clear that the plugin is properly loaded.
+ Finished implementation of the Sieve include extension. It should now
fully conform to RFC 6609. The main addition is the new :optional tag which
makes the include command ignore missing included scripts without an error.
+ Finished implementation of the Sieve environment extension as much as
possible. Environment items "location", "phase" and "domain" now also
return a usable value.
Changelog v0.3.2:
+ sieve-refilter tool: improved man page documentation by explicitly specifying
the syntax used for mailbox arguments.
+ Sieve: spamtest and virustest extensions: improved trace debugging of score
calculation.
+ Sieve: made error messages about exceeding the maximum number of actions more
verbose.
- Sieve tools: fixed problems with running as root: sievec and sieve-dump now
ignore mail_uid and mail_gid settings when run as root.
- Sieve: fixed bug in action accounting (for limit checking): increase action
instance count only when an action is actually created.
- Sieve: include extension: fixed namespace separation of :global and :personal
scripts.
- ManageSieve: fixed segfault bug triggered by CHECKSCRIPT command.
- Fixed linking with ld.gold.
- Fixed several Clang compile warnings and a few potential bugs.
Changelog v0.3.3:
- Fixed compile against installed Dovecot headers. This was broken by the
ld.gold fix in the previous release.
* Added support for retrieving Sieve scripts from dict lookup. This
means that Sieve scripts can now be downloaded from a database.
Compiled script binaries are still put on disk somewhere if used.
The INSTALL documentation is updated with information on this new
feature and the (backwards-compatible) changes to the configuration.
Note that his feature is currently not supported for
sieve_before/sieve_after or script management through ManageSieve.
+ Incorporated the sieve_duplicate plugin into main Pigeonhole tree as
a normal extension (vnd.dovecot.duplicate). This Dovecot-specific
extension adds the ability to check for duplicate deliveries based
on message ID. Specification can be found in:
doc/rfc/spec-bosch-sieve-duplicate.txt
+ Added support for specifying multiple sieve_before and sieve_after
paths. This adds much more flexibility to the multiscript
configuration. One application is to have user-specific Sieve
scripts outside the user's normal control through ManageSieve.
+ Added a "session ID" string for managesieve connections, available in
%{session} variable (analogous to Dovecot change).
- Fixed several small issues, including a few potential segfault bugs,
based on static source code analysis.
- ManageSieve: changed use of EPROTO error to EIO in ManageSieve
string stream implementation because it is apparently not known in
BSD.
- Gave stamp.h.in (needed for autotools) some content to prevent it
from disappearing in patch files.
- Fixed bug that caused a SunStudio CC compile failure (reported by
Piotr Tarnowski).
* Renamed sieve_global_path setting to sieve_default for clarity. Old name is
still recognized for backwards compatibility. Support for the ancient (pre
v1.1) name for this setting "global_script_path" is now dropped.
* Added means to prohibit use of redirect action. Setting sieve_max_redirects
to 0 now means that redirect is disallowed in stead of unlimited. Default
value remains four.
* Fixed interaction of Sieve include extension with ManageSieve. It is updated
to match new requirements in the draft include specification. Missing
included scripts are no longer an error at upload time.
* Updated RFC2822 header field body verification to exclude non-printing
characters (RFC5322). Only Sieve actions that can create unstructured header
values (currently enotify/mailto and editheader) are affected by this change.
+ Completed sieve-filter tool to a useful state. The sieve-filter tool provides
a means to (re)filter messages in a mailbox through a Sieve script.
+ Implemented the Sieve editheader extension. It is now possible to add and
remove message headers from within Sieve.
+ ManageSieve: added support for reading quoted and literal strings as a
stream. Fixes support for handing large SASL responses (analogous to similar
changes in Dovecot). It is now also allowed to use a quoted string for the
PUTSCRIPT script argument.
+ Added code to cleanup tmp directory in Sieve storage directory (sieve_dir)
every once in a while.
+ Added support for substituting the entire message during Sieve processing.
This is used for the filter action provided by the new sieve_extprograms
plugin (provided separately for now). The filter action allows passing the
message through an external program.
+ Added support for restricting certain Sieve language extensions to
(admin-controled) global scripts. Restricted extensions can be configured
using the new sieve_global_extensions setting. This is particularly useful
for some of the Dovecot-specific (plugin-based) Sieve extensions, that can
be somewhat hazardous when under direct control of users (e.g.
sieve_extprograms).
+ Sieve vacation extension: made discard message for implicit
delivery more verbose
- The sieve-test tool: mixed up original and final envelope recipient
in implementation of command line arguments.
- Sieve vacation extension: resolved FIXME regarding the use of
variables in the :handle argument. Variables are now handled
correctly.
- Sieve body extension: fixed handling of :content "message/rfc822".
This now yields the headers of the embedded message as required by
the specification. Handling of :content "multipart" remains to be
fixed.
- LDA Sieve plugin: fixed problem with recipient_delimiter
configuration. Now it falls back to global recipient_delimiter
setting if plugin/recipient_delimiter is not set.
Changelog:
+ Vacation extension: finally added support for using the original
recipient in vacation address check. It is also possible to disable
the recipient address check entirely. Check doc/vacation.txt for
configuration information.
+ Include extension: made limits on the include depth and the total
number of included scripts configurable. Check doc/include.txt for
configuration information.
+ Implemented ihave extension. This allows checking for the availability
of Sieve language extensions at 'runtime'. Actually, this is checked
at compile time. At runtime the interpreter checks whether extensions
that were not previously available are still unavailable. If the
situation changed, the script is re-compiled and the ihave tests are
evaluated again.
+ Sieve: optimized compilation of tests that yield constant results
(i.e. known at compile tme), such as 'true' and 'false'. No code is
produced anymore for script sections that are never executed. Also,
semantics are not verified anymore in uncompiled script sections.
+ Made vnd.dovecot.debug extension available to the LDA plugin instead
of only the command line tools.
+ Sieve: redirect action now adds X-Sieve-Redirected-From header
(mainly for people using SPF/SRS).
- Sieve: fixed bug in handling flags and keywords; in case of error an
assertion was triggered.
- Script storage: improved handling of unconfigured user home directory.
Originally this would produce an unhelpful error message.
- Imap4flags extension: prevent forcibly enabling imap4flags when
imapflags is enabled.
- Fixed various -Wunused-but-set-variable compiler warnings.
- Include extension: forgot to check variable identifier syntax for
'global' command.
- Sieve: fixed debug mode; no messages were logged in some situations.
- sievec tool: forgot to enable -D (debug) parameter.
* Sieve filter tool: finished implementing basic functionality. It is not
quite ready yet, but it is available for those willing to experiment
with it (needs --with-unfinished-features config to compile). Also
includes man page.
* Vacation extension now inhibits replies to messages from sender listed
in :addresses, thus preventing replies to one of the user's other known
addresses.
* Vacation extension: implemented the (draft) vacation-seconds extension.
This also adds min/max period configuration settings. Refer to
doc/vacation.txt for configuration information.
* ManageSieve: fixed bug in UTF-8 checking of string values. This is done
by discarding the original implementation and migrating to the Dovecot
API's UTF-8 functionality.
* Sieve command line tools now avoid initializing the mail store unless
necessary. This prevents sievec and sieve-dump from failing when
executed by root for example.
* Enotify extension: fixed inappropriate return type in mailto URI parse
function, also fixing ARM compiler warning.
* Vacation extension: fixed handling of sendmail errors. It produced an
additional confusing success message in case of error.
* Removed header MIME-decoding to fix erroneous address parsing. Applies to
address test and vacation command.
* Fixed segfault bug in extension configuration, triggered when unknown
extension is mentioned in sieve_extensions setting.
* LDA Sieve plugin: started using Dovecot LDA reject API for the
reject extension. This means that the LDA reject_reason and
reject_subject settings now also work for Pigeonhole's LDA Sieve
plugin.
* Did some work on the new sieve-filter tool. It is mostly
functional, but it is not finished yet.
* Dovecot change: services' default vsz_limits weren't being enforced
correctly in earlier v2.0 releases. Now that they are enforced, you
might notice that the default limits are too low and you need to
increase them. This problem will show up in logs as "out of memory"
errors. See default_vsz_limit and service { vsz_limit } settings.
- Imap4flags: fixed segfault bug occurring in multiscript context.
- Added version checking to the ManageSieve settings plugin. This
plugin was forgotten when the LDA plugin was updated with this
change in the previous release.
- LDA Sieve plugin: fixed memory leak at deinitialization.
It adds support for the Sieve language (RFC 5228) and the ManageSieve protocol
(RFC 5804) to the Dovecot Secure IMAP Server.
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,
aManageSieve server always makes sure that uploaded scripts are valid,
preventing compile failures at mail delivery.
This package provides Sieve support as a plugin to Dovecot's Local Delivery
Agent (LDA) and Dovecot's LMTP service. The ManageSieve protocol is provided is
an additional service, next to Dovecot's own POP3 and IMAP services.
