[FFe] Please upgrade dovecot to version 2.0.19

Rationale:

Upstream have release quite a few bug fixes since 2.0.15 including:

 mbox: Fixed accessing Dovecot v1.x mbox index files without errors.

Which is pertinent to deployments upgrading from LTS -> LTS as lucid has dovecot 1.2.x

See original bug report for details of upstream changes.

Build logs:
See attached

Testing:

I've tested the following scenarios using mail-stack-delivery (or dovecot-postfix as it was know in lucid):

 Upgrade from Lucid to Precise (plus this upgraded package): OK
 Fresh install on Precise: OK
 Upgrade from 2.0.15 to 2.0.19 on Precise: OK

In each test case I validated that I was able to send messages using POP3 and retrieve the contents on the mailbox using IMAP.

Original Bug Report:

Hi, I think it would be great to have latest Debian testing release of dovecot (if not the last upstream one, which is 2.0.18), because of important bug fixes:

Last upstream release only :

v2.0.19 2012-03-15 Timo Sirainen <email address hidden>

 - IMAP: ENABLE CONDSTORE/QRESYNC + STATUS for a mailbox might not
   have seen latest external changes to it, like new mails.
 - imap_id_* settings were ignored before login.
 - doveadm altmove did too much work sometimes, retrying moves
   it had already done.
 - mbox: Fixed accessing Dovecot v1.x mbox index files without errors.

Last Debian testing release:

v2.0.18 2012-02-12 Timo Sirainen <email address hidden>

 + DIGEST-MD5 authentication supports authorization id now.
   Patch by Yubao Liu
 + Added instance_name setting which is used to prefix Dovecot
   processes in ps output.
 - LDA/LMTP: Sending a large mail via submission_host or via LMTP proxy
   may have caused a hang.
 - Fixed dbox + mail_attachment_dir + zlib problems.
 - Login processes weren't logging all intended messages with
   auth_verbose=yes
 - IMAP: THREAD REFS sometimes returned invalid (0) nodes.
 - IMAP: CONTEXT search return option wasn't handled at all.
 - dbox: Various error handling fixes.
 - snarf plugin: Keep the mailbox locked during snarfing to avoid
   duplicates.

v2.0.17 2012-01-06 Timo Sirainen <email address hidden>

 + Proxying now supports sending SSL client certificate to server with
   ssl_client_cert/key settings.
 + doveadm dump: Added support for dumping dbox headers/metadata.
 - Fixed memory leaks in login processes with SSL connections
 - vpopmail support was broken in v2.0.16

v2.0.16 2011-11-17 Timo Sirainen <email address hidden>

 * VSZ limits weren't being enforced for any processes. On server with
   large mailboxes you may now see errors about it if the limits aren't
   high enough. To fix them, either increase individual service {
   vsz_limit } values or simply increase the default_vsz_limit setting.
 * Proxying: If using ssl=yes or starttls=yes with a hostname (not IP)
   as proxy destination, require that the certificate matches the given
   hostname.
 * LMTP: Changed default client_limit to 1. This should improve LMTP
   throughput with default settings.
 * dsync: Quota is no longer enforced (i.e. dsync can't fail because
   user is over quota).

 + Added "auto" mail storage driver, which can be used to autodetect
   mailbox location and format. This behavior is already the default
   for empty mail_location setting, so this change is mainly useful for
   shared namespace's location setting.
 + checkpassword: Export all auth %variables to AUTH_* environment.

We have two choices: Import latest upstream release (with latest fixes) or latest Debian release. But in both cases, we should resynchronise pigeonhole patches with Debian in order to have latest pigeonhole fixes too.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: dovecot-imapd (not installed)
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic-pae 3.2.13
Uname: Linux 3.2.0-21-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0-0ubuntu2
Architecture: i386
CheckboxSubmission: c4273c0f4f2b8d26cd6bf31cadfd2912
CheckboxSystem: a871981cb5bdf4d6ebd55be46becf77e
Date: Sun Apr 1 14:20:58 2012
EcryptfsInUse: Yes
ProcEnviron:
 SHELL=/bin/bash
 TERM=xterm
 LANG=fr_FR.UTF-8
 LANGUAGE=fr_FR:en
SourcePackage: dovecot
UpgradeStatus: Upgraded to precise on 2008-10-18 (1260 days ago)