ManageSieve Client Issues
=========================

Although this <ManageSieve.txt> server should comply with the draft
specification of the <ManageSieve.txt> protocol, quite a few clients don't.
This page lists the known client problems.

 * *The TLS problem*:
 * The core of the TLS problem is that a <ManageSieve.txt> server is required
   to send an unsolicited CAPABILITY response right after successful TLS
   negotiation. Older Cyrus servers did not do this and many clients
   incorporated this protocol error as the standard, meaning that these do not
   expect the CAPABILITY response and thus fail with subsequent commands.
   However, now that Cyrus' Timsieved has changed its behaviour towards
   protocol compliance, all those clients will follow eventually. The following
   clients are known to have this TLS issue:

   Thunderbird Sieve add-on:
     TLS broken for old versions. Starting with version 0.1.5 the Thunderbird
     Sieve add-on properly supports TLS.

   KMail + kio_sieve:
     TLS broken for old versions. This issue is fixed at least in kmail 1.9.9 /
     kde 3.5.9.

   SquirrelMail/AvelSieve:
     For some users the !Avelsieve client stores scripts but fails to retrieve
     them later. This problem is directly caused byAvelSieve's TLS support. A
     quick way to fix this is not to enable TLS for <ManageSieve.txt>.
     AvelSieve stable (v1.0.1) does not have TLS support at all, so you will
     see this happen only with the development or SVN versions.  Another issue
     is that (at least with avelsieve-1.9.7) it is impossible to delete the
     last rule of a script. For avelsieve-1.9.7 you find a patch that fixes
     these two issues here
     [http://www.rename-it.nl/dovecot/client-patches/avelsieve-1.9.7-dovecot.patch].

 * *Smartsieve, Websieve*:
 * These clients are specifically written for Cyrus timsieved and fail on
   multiple stages of the protocol when connected to Dovecot <ManageSieve.txt>.

    * /(Stephan Bosch)/: I intend to look at these in the future, but currently
      these are very much unavailable for use with Dovecot. But, feel free to
      fix these yourself:)
    * /(Steffen "Stefreak" Neubauer)/: I've fixed the problems for smartsieve.
      Just replace your lib/Managesieve.php with this
      here:https://www.commail.org/sieve/lib/Managesieve.phps - HAVE FUN!
    * /(Mark Titorenko)/: Stephan provides an updated link to Steffen's
      Managesieve patch in this Dovecot mailing list post dated 2009-09-01
      [http://www.mail-archive.com/dovecot@dovecot.org/msg21862.html]

*NOTE*: If you add new issues to this list, notify the author or send an e-mail
to the Dovecot mailing list [http://dovecot.org/mailinglists.html]. In any
case, you must make sure that the issue is properly explained and that the
author can contact you for more information.

(This file was created from the wiki on 2011-05-11 04:42)
