# apt-get install postfix postfix-mysql libsasl2-modules sasl2-bin 

Si vous n'avez pas de serveur MySQL mutualisé, il faut que vous installiez MySQL

# apt-get install mysql-server mysql-client

# mysql -u root -p
Enter password: 

mysql> create database postfix;
Query OK, 1 row affected (0.00 sec)
 
mysql> GRANT ALL PRIVILEGES ON postfix.* TO 'postfixadmin'@'localhost' IDENTIFIED BY 'monmotdepasse';
Query OK, 0 rows affected (0.00 sec)
 
mysql> GRANT SELECT ON postfix.* TO 'postfix'@'localhost' IDENTIFIED BY 'monmotdepasse2';
Query OK, 0 rows affected (0.00 sec)
 
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

Nous lui donnerons comme GID/UID le numéro 5000

# groupadd -g 5000 vmail
# mkdir /data/mail
# useradd -d /data/mail/mboxes -m -u 5000 -g 5000 vmail

# vi /etc/postfix/mysql_relay_domains.cf
::::::::::::::
hosts = mysql_srv
user = postfix
password = monmotdepasse2
dbname = postfix
query = SELECT domain FROM domain WHERE domain='%s' and active = 1

# vi /etc/postfix/mysql_virtual_alias_maps.cf
::::::::::::::
hosts = mysql_srv
user = postfix
password = monmotdepasse2
dbname = postfix
query = SELECT goto FROM alias WHERE address='%s' AND active = 1

# vi /etc/postfix/mysql_virtual_mailbox_domains.cf
::::::::::::::
hosts = mysql_srv
user = postfix
password = monmotdepasse2
dbname = postfix
query = SELECT domain FROM domain WHERE domain='%s' and backupmx = 0 and active = 1

# vi /etc/postfix/mysql_virtual_mailbox_maps.cf
::::::::::::::
hosts = mysql_srv
user = postfix
password = monmotdepasse2
dbname = postfix
query = SELECT maildir FROM mailbox WHERE username='%s' AND active = 1

# vi mysql_virtual_alias_domain_maps.cf
::::::::::::::
hosts = mysql_srv
user = postfix
password = monmotdepasse2
dbname = postfix
query = SELECT goto FROM alias WHERE address = ( SELECT CONCAT('%u@', target_domain ) FROM alias_domain WHERE  alias_domain = '%d' )
  

# vi /etc/postfix/sasl/smtpd.conf
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN
auxprop_plugin: rimap

Mettons à jour /etc/default/saslauthd avec ces paramètres (ne touchez pas au reste…)

# vi /etc/default/saslauthd
START=yes
MECHANISMS="rimap"
#imap server address
MECH_OPTIONS="localhost"
OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r"

Ajoutons postfix au groupe sasl:

# adduser postfix sasl
Ajout de l'utilisateur « postfix » au groupe « sasl »...
Ajout de l'utilisateur postfix au groupe sasl
Fait.

Et redémarrons le service :

# service saslauthd restart
Stopping SASL Authentication Daemon: saslauthd.
Starting SASL Authentication Daemon: saslauthd.

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

append_dot_mydomain = no

readme_directory = no

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mailnew.dm.priv
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $myhostname
mydestination = $myhostname , localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.3.0/24
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all

virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
virtual_mailbox_base = /data/mail/mboxes 

virtual_transport = dovecot

virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_mailbox_domains.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_domain_maps.cf, mysql:/etc/postfix/mysql_virtual_alias_maps.cf
relay_domains = mysql:/etc/postfix/mysql_relay_domains.cf

smtpd_sender_restrictions =
   check_sender_access hash:/etc/postfix/access

smtpd_recipient_restrictions =
   permit_mynetworks,
   permit_sasl_authenticated,
   reject_unauth_destination,
   reject_unknown_client_hostname,
   reject_unauth_pipelining,
   reject_invalid_hostname,
   reject_non_fqdn_sender,
   reject_unknown_sender_domain,
   reject_non_fqdn_recipient,
   reject_unknown_recipient_domain,
   reject_sender_login_mismatch,
   reject_authenticated_sender_login_mismatch,
   reject_rbl_client bl.spamcop.net,
   permit

smtp_connection_cache_destinations = hotmail.fr, hotmail.com, gmail.com

smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot

smtpd_sasl_path = private/auth

delay_warning_time = 1h

dovecot_destination_recipient_limit = 1
 
content_filter = amavis:[127.0.0.1]:10024
receive_override_options = no_address_mappings

transport_maps = hash:/etc/postfix/transport
vacation_destination_recipient_limit = 1

smtp      inet  n       -       -       -       1       smtpd
    -o content_filter=amavis:[127.0.0.1]:10024
    -o receive_override_options=no_address_mappings
pickup    unix  n       -       -       60      1       pickup
cleanup   unix  n       -       -       -       0       cleanup
qmgr      unix  n       -       n       300     1       qmgr
tlsmgr    unix  -       -       -       1000?   1       tlsmgr
rewrite   unix  -       -       -       -       -       trivial-rewrite
bounce    unix  -       -       -       -       0       bounce
defer     unix  -       -       -       -       0       bounce
trace     unix  -       -       -       -       0       bounce
verify    unix  -       -       -       -       1       verify
flush     unix  n       -       -       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
proxywrite unix -       -       n       -       1       proxymap
smtp      unix  -       -       -       -       -       smtp
relay     unix  -       -       -       -       -       smtp
showq     unix  n       -       -       -       -       showq
error     unix  -       -       -       -       -       error
retry     unix  -       -       -       -       -       error
discard   unix  -       -       -       -       -       discard
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       -       -       -       lmtp
anvil     unix  -       -       -       -       1       anvil
scache    unix  -       -       -       -       1       scache
maildrop  unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
uucp      unix  -       n       n       -       -       pipe
  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
ifmail    unix  -       n       n       -       -       pipe
  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
  flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix  -       n       n       -       2       pipe
  flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman   unix  -       n       n       -       -       pipe
  flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
  ${nexthop} ${user}
dovecot   unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail:vmail argv=/usr/lib/dovecot/deliver -f ${sender} -d ${user}@${nexthop}
amavis unix - - - - 2 smtp
        -o smtp_data_done_timeout=1200
        -o smtp_send_xforward_command=yes

127.0.0.1:10025 inet n    -       n       -       -     smtpd
    -o content_filter=
    -o smtpd_delay_reject=no
    -o smtpd_client_restrictions=permit_mynetworks,reject
    -o smtpd_helo_restrictions=
    -o smtpd_sender_restrictions=
    -o smtpd_recipient_restrictions=permit_mynetworks,reject
    -o smtpd_data_restrictions=reject_unauth_pipelining
    -o smtpd_end_of_data_restrictions=
    -o smtpd_restriction_classes=
    -o mynetworks=127.0.0.0/8
    -o smtpd_error_sleep_time=0
    -o smtpd_soft_error_limit=1001
    -o smtpd_hard_error_limit=1000
    -o smtpd_client_connection_count_limit=0
    -o smtpd_client_connection_rate_limit=0
    -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks,no_milters
    -o local_header_rewrite_clients=

autoreply.druidesmetal.net        vacation:

# postmap /etc/postfix/transport

yahoo.com REJECT
yahoo.com.tw REJECT

# postmap /etc/postfix/access

# Supression des MAILER-DAEMON
00 * * * * root /usr/local/bin/rmreturn.sh > /dev/null
# Suppression des mails en deferred
00 00 * * * root /usr/sbin/postsuper -d ALL deferred >/dev/null

# more /usr/local/bin/rmreturn.sh
#!/bin/bash

/usr/sbin/postqueue -p | grep MAILER-DAEMON | awk '{print $1}' | /usr/sbin/postsuper -d -

# apt-get install dovecot-imapd dovecot-pop3d dovecot-mysql dovecot-managesieved

auth_debug = yes
auth_verbose = yes
disable_plaintext_auth = no
first_valid_gid = 5000
first_valid_uid = 5000
last_valid_gid = 5000
last_valid_uid = 5000
listen = *
log_path = /var/log/dovecot.log
mail_debug = yes
mail_location = maildir:/data/mail/mboxes/%d/%u
protocol lda {
        mail_plugins = $mail_plugins quota sieve
}
passdb {
        args = /etc/dovecot/dovecot-sql2.conf.ext
        driver = sql
}
postmaster_address = postmaster@druidesmetal.com
protocols = " imap sieve"
service auth {
        unix_listener /var/spool/postfix/private/auth {  
                mode = 0660
                user = postfix
                group = postfix
        }
}
service imap-login {
        inet_listener imap {
                port = 143
        }
        inet_listener imaps {
                port = 993
                ssl = yes
        }
}
service managesieve-login {
        inet_listener sieve {
                port = 4190
        }
        inet_listener sieve_deprecated {
                port = 2000
        }
        service_count = 1
        process_min_avail = 1
        vsz_limit = 64M
}
service managesieve {
        process_limit = 1024
}
protocol sieve {
        managesieve_max_line_length = 65536
        managesieve_implementation_string = dovecot
        log_path = /var/log/dovecot-sieve-errors.log
        info_log_path = /var/log/dovecot-sieve.log
}
service dict {
        unix_listener dict {
                mode = 0775
                user = postfix
                group = vmail
        }
}
ssl_cert = </etc/dovecot/smtpd.pem
ssl_key = </etc/dovecot/smtpd.pem
userdb {
        driver = passwd
}
userdb {
        args = /etc/dovecot/dovecot-sql2.conf.ext
        driver = sql
}
dict {
        sqlquota = mysql:/etc/dovecot/dovecot-dict-sql2.conf.ext
}
plugin {
        ## quota
        quota = dict:%u::proxy::sqlquota
        quota_rule = *:storage=10M:messages=1000
        quota_warning = storage=75%% /usr/local/bin/quota-warning.sh 75 %u
        quota_warning2 = storage=90%% /usr/local/bin/quota-warning.sh 90 %u

        ## Sieve
      sieve_before = /var/lib/dovecot/sieve/global/spam.sieve
      sieve_dir = /data/mail/mboxes/%d/%u/sieve
      sieve = /data/mail/mboxes/%d/%u/.dovecot.sieve
      sieve_global_path = /var/lib/dovecot/sieve/default.sieve
      sieve_global_dir = /var/lib/dovecot/sieve/global/

      # Autocreate
      autocreate = Trash
      autocreate = Junk
      autocreate = Drafts
      autocreate = Sent
      autosubscribe = Trash
      autosubscribe = Junk
      autosubscribe = Drafts
      autosubscribe = Sent

}

# Database driver: mysql, pgsql, sqlite
driver = mysql 

connect = host=mysql_srv dbname=postfix user=postfix password=monmotdepasse2

default_pass_scheme = MD5

password_query = SELECT username, domain, password FROM mailbox WHERE username = '%u'

user_query = SELECT '/data/mail/mboxes/%d/%u' as home, 5000 AS uid, 5000 AS gid, CONCAT('*:bytes=', CAST(quota AS CHAR)) AS quota_rule FROM mailbox WHERE username = '%u' AND active='1'

connect = host=mysql_srv dbname=postfix user=postfixadmin password=monmotdepasse
map {
  pattern = priv/quota/storage
  table = quota2
  username_field = username
  value_field = bytes
}
map {
  pattern = priv/quota/messages
  table = quota2
  username_field = username
  value_field = messages 
}

#!/bin/sh

PERCENT=$1
FROM="postmaster@druidesmetal.com"
qwf="/tmp/quota.warning.$$"

echo "From: $FROM
To: $USER
To: postmaster@druidesmetal.com
Subject: Votre boite mail est pleine a $PERCENT%
Content-Type: text/plain; charset="UTF-8"

Votre boite mail est pleine a $PERCENT%+, veuillez effacer des messages et vider le corbeille, ou contactez  votre administrateur" >> $qwf

cat $qwf | /usr/sbin/sendmail -f $FROM "$USER"
rm -f $qwf

exit 0

# service dovecot restart
Restarting IMAP/POP3 mail server: dovecotIf you have trouble with authentication failures,
enable auth_debug setting. See http://wiki.dovecot.org/WhyDoesItNotWork
This message goes away after the first successful login.
.

# service saslauthd restart
Stopping SASL Authentication Daemon: saslauthd.
Starting SASL Authentication Daemon: saslauthd.

# service postfix restart
Stopping Postfix Mail Transport Agent: postfix.
Starting Postfix Mail Transport Agent: postfix.

Par défaut, dovecot ne fournit pas de rotation de log.

Voici ce que j'ai mis en place :

# more /etc/logrotate.d/dovecot 
/var/log/dovecot.log {
  rotate 6
  daily
  copytruncate
  compress
  missingok
  notifempty

}

# apt-get install amavisd-new spamassassin clamav clamav-daemon zoo unzip bzip2 arj nomarch lzop \  
cabextract libnet-ldap-perl libauthen-sasl-perl clamav-docs daemon libio-string-perl \ 
libio-socket-ssl-perl libnet-ident-perl zip libnet-dns-perl p7zip unrar-free  libmail-sender-perl \ 
libdbd-mysql-perl libemail-valid-perl libmime-perl liblog-log4perl-perl liblog-dispatch-perl \ 
libgetopt-argvfile-perl libmime-charset-perl libmime-encwords-perl

# adduser clamav amavis
Ajout de l'utilisateur « clamav » au groupe « amavis »...
Ajout de l'utilisateur clamav au groupe amavis
Fait.

# vi /etc/amavis/conf.d/15-content_filter_mode

use strict;
 
@bypass_virus_checks_maps = (
   \%bypass_virus_checks, \@bypass_virus_checks_acl, \$bypass_virus_checks_re); 
   
@bypass_spam_checks_maps = (
   \%bypass_spam_checks, \@bypass_spam_checks_acl, \$bypass_spam_checks_re);
 
1;  # ensure a defined return

* Modifier le fichier suivant

# vi /etc/amavis/conf.d/20-debian_defaults

(...)
#$sa_spam_subject_tag = '***SPAM*** ';
$sa_tag_level_deflt  = -999;  # add spam info headers if at, or above that level
$sa_tag2_level_deflt = 5.00; # add 'spam detected' headers at that level
$sa_kill_level_deflt = 5.00; # triggers spam evasive actions
$sa_dsn_cutoff_level = 10;   # spam level beyond which a DSN is not sent

$final_virus_destiny      = D_DISCARD;  # (data not lost, see virus quarantine)
$final_banned_destiny     = D_BOUNCE;   # D_REJECT when front-end MTA
$final_spam_destiny       = D_PASS;
$final_bad_header_destiny = D_PASS;     # False-positive prone (for spam)

@local_domains_maps = ( ['.'] );
(...)

* Si vous installer sur une ubuntu, supprimez le fichier 21-ubuntu_defaults présent dans /etc/amavis/conf.d

* Modifier le fichier suivant ensuite pour la gestion du hostname

# vi /etc/amavis/conf.d/05-node_id 
use strict;

# $myhostname is used by amavisd-new for node identification, and it is
# important to get it right (e.g. for ESMTP EHLO, loop detection, and so on).

chomp($myhostname = `hostname --fqdn`);

# To manually set $myhostname, edit the following line with the correct Fully
# Qualified Domain Name (FQDN) and remove the # at the beginning of the line.
#
#$myhostname = "mail.example.com";
$myhostname = "mailnew.dm.priv";

1;  # ensure a defined return

Un filtre sieve est crée afin de déplacer automatiquement les mails SPAM dans le répertoire Junk de chaque email.

Ce filtre est commun à tout le monde, pour cela on le crée dans le répertoire /var/lib/dovecot/sieve/global qui a été définie dans la conf dovecot.

# vi /var/lib/dovecot/sieve/global/spam.sieve

require ["fileinto"];
# rule:[SPAM]
if header :contains "X-Spam-Flag" "YES"
{
        fileinto "Junk";
}

Comme c'est un filtre commun, il faut le précompiler pour que dovecot puisse l'utiliser

# sievec /var/lib/dovecot/sieve/global/spam.sieve

Dans la conf Doveconf on ajoute cette ligne, afin qu'il prenne en compte d'abord ce filtre avant de prendre ceux crée par email

sieve_before = /var/lib/dovecot/sieve/global/spam.sieve

# mkdir /var/spool/virusmails
# chown amavis:amavis /var/spool/virusmails

# sa-update -D

# vi /etc/default/spamassassin
# Change to one to enable spamd
ENABLED=1
...
# Cronjob
# Set to anything but 0 to enable the cron job to automatically update
# spamassassin's rules on a nightly basis
CRON=1

# service spamassassin start
Starting SpamAssassin Mail Filter Daemon: spamd.

# service amavis restart
Stopping amavisd: amavisd-new.
Starting amavisd: amavisd-new.

# service clamav-daemon restart
Stopping ClamAV daemon: clamd.
Starting ClamAV daemon: clamd .

# service postfix restart
Stopping Postfix Mail Transport Agent: postfix.
Starting Postfix Mail Transport Agent: postfix.

Postfix.Admin sert à créer les domaines, les emails et les alias dans la base de données.

Si vous n'avez pas de serveur Web mutualisé, il faut que vous installiez Apache/PHP

# apt-get install apache2 php5 php5-mysql php5-imap

Téléchargez postfixadmin, ici: http://sourceforge.net/projects/postfixadmin/files/postfixadmin/ La dernière version (2 Janvier 2013) est "postfixadmin-2.3.6" (2 Mio)

# wget http://tenet.dl.sourceforge.net/project/postfixadmin/postfixadmin/postfixadmin-2.3.6/postfixadmin-2.3.6.tar.gz
# tar xzvf postfixadmin-2.3.6.tar.gz -C /var/www/
# mv /var/www/postfixadmin-2.3.6/ /var/www/postfixadmin/
# chown -R www-data:www-data /var/www/postfixadmin/
# cp /var/www/postfixadmin/config.inc.php /var/www/postfixadmin/config.inc.php.sos
# sed -i 's/change-this-to-your.domain.tld/druidesmetal.com/g' /var/www/postfixadmin/config.inc.php

# vi /var/www/postfixadmin/config.inc.php

$CONF['configured'] = true;
...
$CONF['default_language'] = 'fr';
...
$CONF['database_type'] = 'mysqli';
$CONF['database_host'] = 'localhost';
$CONF['database_user'] = 'postfixadmin';
$CONF['database_password'] = 'monmotdepasse';
$CONF['database_name'] = 'postfix';
...
$CONF['encrypt'] = 'md5crypt';

# service apache2 restart
Restarting web server: apache2 ... waiting .

Rendez-vous maintenant à l'adresse suivante: https://votre_IP/postfixadmin/setup.php

Entrez le mot de passe du "setup" afin que le programme génère un HASH de sécurité que vous irez coller dans le fichier /var/www/postfixadmin/config.inc.php

If you want to use the password you entered as setup password, edit config.inc.php and set

$CONF['setup_password'] = 'c4861ab90fcf650da20d5d2b6258a7d9:94922063c5569077df0a65dff7ae1e3d349b7732';

# vi /var/www/postfixadmin/config.inc.php

Et Remplacez:

$CONF['setup_password'] = 'changeme';

Par:

$CONF['setup_password'] = 'c4861ab90fcf650da20d5d2b6258a7d9:94922063c5569077df0a65dff7ae1e3d349b7732';

Ensuite, retapez le mot de passe de sécurité, choisissez un administrateur et donnez lui un mot de passe:

Vous pouvez maintenant vous rendre à la page d'accueil https://votre_IP/postfixadmin/ :

# vi /var/www/postfixadmin/config.inc.php
...
// Quota
// When you want to enforce quota for your mailbox users set this to 'YES'.
$CONF['quota'] = 'YES';
...
// Optional:
// Show used quotas from Dovecot dictionary backend in virtual
// mailbox listing.
// See: DOCUMENTATION/DOVECOT.txt
//      http://wiki.dovecot.org/Quota/Dict
//
$CONF['used_quotas'] = 'YES';
 
// if you use dovecot >= 1.2, set this to yes.
// Note about dovecot config: table "quota" is for 1.0 & 1.1, table "quota2" is for dovecot 1.2 and newer
$CONF['new_quota_table'] = 'YES';

Création du script chargé d'envoyer les alertes:

# vi /usr/local/bin/quota-warning.sh
#!/bin/sh
 
PERCENT=$1
FROM="admin@isalo.org"
qwf="/tmp/quota.warning.$$"
 
echo "From: $FROM
To: $USER
To: admin@isalo.org
Subject: Votre boite mail est pleine à $PERCENT%
Content-Type: text/plain; charset="UTF-8" 
 
Votre boite mail est pleine à $PERCENT%+, veuillez effacer des messages et vider le corbeille, ou contactez votre administrateur" >> $qwf
 
cat $qwf | /usr/sbin/sendmail -f $FROM "$USER"
rm -f $qwf
  
exit 0

# chown dovecot:vmail /usr/local/bin/quota-warning.sh
# chmod +x /usr/local/bin/quota-warning.sh

Il faut que vous téléchargiez l'archive sur le site

http://sourceforge.net/projects/roundcubemail/files/roundcubemail/0.9.2/roundcubemail-0.9.2.tar.gz

Décompressez l'archive dans le DocumentRoot d'Apache

# tar xzvf roundcubemail-0.9.2.tar.gz -C /var/www/
# mv /var/www/roundcubemail-0.9.2/ /var/www/roundcubemail
# chown -R www-data:www-data /var/www/roundcubemail/

Roundcube à besoin d'une base de donnée, il faut maintenant la créer :

# mysql -u root -p
Enter password: 

mysql> create database roundbase;
Query OK, 1 row affected (0.00 sec)

mysql> GRANT ALL PRIVILEGES ON roundbase.* TO 'roundadmin'@'localhost' IDENTIFIED BY 'monmotdepasse';
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.01 sec)
 
mysql> quit
Bye

Rendez-vous maintenant à l'adresse suivante pour la configuration: http://votre_IP/roundcubemail/installer/

Laissez-vous guider, jusqu’à la page de création de la configuration.

Prenez soin de remplir convenablement les questions concernant la base Mysql, le serveur IMAP et SMTP ainsi que les "locales".

L'installeur vous proposera ensuite deux fichiers main.inc.php et db.inc.php qu'il faudra aller copier dans /var/www/roundcube/config/

Cliquez sur "continuer" (en milieu de page) une fois que vous aurez créé les deux fichiers de configuration pour tester.

Quand tous les tests sont "Ok", vous pouvez effacer le répertoire /var/www/roundcubemail/installer/ et vous rendre sur: http://votre_IP/roundcubemail/

# rm -r /var/www/roundcubemail/installer

Gestion des filtres Sieves avec Roundcube.

Il faut activer le plugin qui est livré par défaut avec roundcube.

# vi /var/www/roundcubemail/config/main.inc.php
Vers la ligne 324...
// ----------------------------------
// PLUGINS
// ----------------------------------

// List of active plugins (in plugins/ directory)
$rcmail_config['plugins'] = array('managesieve');

Et de le configurer:

# cp /var/www/roundcubemail/plugins/managesieve/config.inc.php.dist /var/www/roundcubemail/plugins/managesieve/config.inc.php

Remplacez :

$rcmail_config['managesieve_port'] = 2000;

Par :

$rcmail_config['managesieve_port'] = 4190;

Cette section sera décrite dans la doc suivante Serveur-Messagerie-Vacation