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Old 10th September 2012, 21:37
cbj4074 cbj4074 is offline
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I wondered how to get Dovecot 2 working with ISPConfig 3.0.4, too.

I already had Dovecot 1.2.9 working very reliably with ISPConfig 3.0.4 on Ubuntu 10.04 LTS. But certain Dovecot plug-ins, e.g. Antispam, seem not to work reliably (if at all) with such old versions of Dovecot.

The first challenge was installing Dovecot 2 on Ubuntu 10.04. Fortunately, some kind soul had already built a back-ported package, which made the process pretty simple:

Here are the required steps, which should upgrade Dovecot to 2.1.9 (I'm using ISPConfig

# apt-get install python-software-properties
# add-apt-repository ppa:christian-roessner-net/dovecot
# apt-get update
# apt-get dist-upgrade
Perhaps ISPConfig >= generates its own configuration file from a template, but that was not an option for me. (Unless there is some way to force ISPConfig to reconfigure services, when no upgrade is available; as yet, this question remains unanswered: .)

I let Dovecot do most of the heavy-lifting here. I just fed my old configuration file through Dovecot's configuration updater utility:

# doveconf -n -c /root/dovecot.old.conf > /etc/dovecot/dovecot.conf
The results were not perfect, but Dovecot resolved, or warned about, almost every issue.

The only "fatal" item that Dovecot was not able to update was

mail_plugin_dir = /usr/lib/dovecot/modules/lda

mail_plugin_dir = /usr/lib/dovecot/dovecot-lda
Without further ado, here's my configuration file, which seems to work.

(I have Quota and Sieve installed, which is reflected in this configuration; also, be sure to change the paths to the SSL key and certificate, or comment-out those lines. Finally, the protocol lda {"mail_plugin_dir"} value may be architecture-dependent on some systems, so ensure that the path is correct for the given system.)

auth_mechanisms = plain login

base_dir = /var/run/dovecot/

log_timestamp = "%Y-%m-%d %H:%M:%S "

login_greeting = ISPConfig3 IMAP server ready...

mail_gid = 5000
mail_location = maildir:/var/vmail/%d/%n/Maildir
mail_privileged_group = mail
mail_uid = 5000

passdb {
  args = /etc/dovecot/dovecot-sql.conf
  driver = sql

plugin {
  quota = dict:user::file:/var/vmail/%d/%n/.quotausage
  sieve = /var/vmail/%d/%n/.sieve

protocols = imap pop3

service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  unix_listener auth-master {
    mode = 0600
    user = vmail

service imap {
  executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/imap

service pop3 {
  executable = /usr/lib/dovecot/rawlog /usr/lib/dovecot/pop3

ssl = yes
ssl_cert = </root/ssl/your-ssl.crt
ssl_cipher_list = ALL:!LOW:!SSLv2
ssl_key = </root/ssl/your-ssl.key
verbose_ssl = no
ssl_parameters_regenerate = 168 hours

userdb {
  driver = prefetch

userdb {
  args = /etc/dovecot/dovecot-sql.conf
  driver = sql

protocol imap {
  mail_plugins = quota imap_quota

protocol pop3 {
  mail_plugins = quota
  pop3_uidl_format = %08Xu%08Xv

protocol lda {
  auth_socket_path = /var/run/dovecot/auth-master
  mail_plugin_dir = /usr/lib64/dovecot/modules
  mail_plugins = sieve quota
  postmaster_address = postmaster@my-domain.tld
As others have mentioned elsewhere in this thread, it was not necessary to modify /etc/dovecot/dovecot-sql.conf; it worked "out-of-the-box".

After upgrading Dovecot, you may wish to start it manually (instead of with the init script), which provides additional visibility into any problems:

# /usr/sbin/dovecot -F -c /etc/dovecot/dovecot.conf
Concerning Sieve, the same gentleman created a back-ported package for Ubuntu 10.04:

# apt-get install dovecot-pigeonhole
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  liblockfile1 lockfile-progs ntpdate
Use 'apt-get autoremove' to remove them.
Suggested packages:
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded.
Need to get 718kB of archives.
After this operation, 2265kB of additional disk space will be used.
Get:1 lucid/main dovecot-pigeonhole 0.3.1-3~rns~lucid [718kB]
Fetched 718kB in 0s (810kB/s)
Selecting previously deselected package dovecot-pigeonhole.
(Reading database ... 73905 files and directories currently installed.)
Unpacking dovecot-pigeonhole (from .../dovecot-pigeonhole_0.3.1-3~rns~lucid_amd64.deb) ...
Setting up dovecot-pigeonhole (0.3.1-3~rns~lucid) ...

Creating config file /etc/dovecot/conf.d/20-managesieve.conf with new version

Creating config file /etc/dovecot/conf.d/90-sieve.conf with new version
Sieve seems to work as expected. A cursory test indicates that rules defined through ISPConfig are processed correctly.

I have not yet tested Quota.

I will post again with any corrections or updates.
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