Dovecot 2

Installer Dovecot 2

# cd /usr/ports/mail/dovecot2
# make config

Verifier que les options suivantes soient sélectionnées : MYSQL, SSL
# make install clean && rehash
# echo 'dovecot_enable="YES"' >> /etc/rc.conf

Créer un utilisateur virtuel pour la gestion des boites aux lettres

# pw groupadd vmail -g 5000
# pw useradd vmail -u 5000 -g vmail -s /usr/sbin/nologin -d /nonexistent -c "Virtual Mail Owner"
# mkdir /mail
# chown vmail:vmail /mail

Ajouter un champ à la table mailbox de la base de donnée de postfix.

# mysql -u root -p'motdepasse'
mysql> use postfix;
mysql> ALTER TABLE mailbox ADD allow_nets VARCHAR(150);
mysql> exit;

Configuration

# cp -RL /usr/local/share/doc/dovecot/example-config/ /usr/local/etc/dovecot

/usr/local/etc/dovecot/conf.d/10-auth.conf
disable_plaintext_auth = no
auth_realms = example1.com example2.fr
auth_default_realm = example1.com
auth_mechanisms = plain login
# !include auth-system.conf.ext
!include auth-sql.conf.ext

/usr/local/etc/dovecot/conf.d/auth-sql.conf.ext
passdb {
  driver = sql
}
#userdb {
#  driver = prefetch
#}
userdb {
  driver = sql
  args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
}

/usr/local/etc/dovecot/conf.d/10-mail.conf
mail_location =maildir:~/
mail_uid = 5000
mail_gid = 5000
mail_temp_dir = /var/tmp
first_valid_uid = 5000
first_valid_gid = 5000
mail_plugins = quota expire mail_log notify

/usr/local/etc/dovecot/conf.d/10-master.conf
unix_listener auth-userdb {
	mode = 0600
    user = vmail
    group = vmail
}
# Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth {
    mode = 0660
    user = postfix
    group = postfix
}

/usr/local/etc/dovecot/conf.d/15-lda.conf
postmaster_address = Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.
hostname = mx.example.com
quota_full_tempfail = no
sendmail_path = /usr/local/sbin/sendmail
lda_mailbox_autocreate = yes

/usr/local/etc/dovecot/conf.d/10-ssl.conf
# ssl_cert=
# ssl_key=
ssl = no

/usr/local/etc/dovecot/conf.d/20-imap.conf
mail_max_userip_connections = 5
 mail_plugins = $mail_plugins imap_quota imap_zlib

/usr/local/etc/dovecot/conf.d/20-pop3.conf
mail_max_userip_connections = 5
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh

Supprimer tout le contenu du fichier 90-quota.conf et le remplacer avec ceci.

/usr/local/etc/dovecot/conf.d/90-quota.conf
plugin {
	quota = maildir:User quota
	quota_rule = *:storage=1G
	quota_rule2 = Trash:storage=+30%
	quota_rule3 = Sent:storage=+30%
	quota_warning = storage=90%% quota-warning 90 %u
	quota_warning2 = storage=75%% quota-warning 75 %u
	# What message to send to IMAP clients (and SMTP senders) when quota is exceeded?
	quota_exceeded_message = Votre boite aux lettres est pleine, Veuillez reessayer ulterieurement.
}
service quota-warning {
	executable = script /usr/local/bin/quota-warning.sh
	user = vmail
	unix_listener quota-warning {
		user = vmail
	}
}

/usr/local/etc/dovecot/conf.d/90-plugin.conf
plugin {
	expire = Trash
	expire2 = Trash/*
	expire3 = Spam		
    mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename        
    mail_log_fields = uid box msgid size        
    #zlib_save_level = 6 # 1..9
    #zlib_save = gz # or bz2
}

/usr/local/etc/dovecot/conf.d/auth-system.conf.ext
#passdb {
# driver = pam
	# [session=yes] [setcred=yes] [failure_show_msg=yes] [max_requests=]
	# [cache_key=] []
	#args = dovecot
#}

/usr/local/etc/dovecot/dovecot-dict-expire.conf.ext
connect = host=127.0.0.1 dbname=postfix user=utilisateur_postfix password=mot_de_passe_postfix
map {
  pattern = shared/expire/$user/$mailbox
  table = expires
  value_field = expire_stamp
  fields {
    username = $user
    mailbox = $mailbox
  }
}

Création du fichier quota-warnig.sh

/usr/local/bin/quota-warning.sh
#!/bin/sh
PERCENT=$1
USER=$2
cat << EOF | /usr/local/libexec/dovecot/dovecot-lda -d $USER -o "plugin/quota=maildir:User quota:noenforcing"
From: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.
Subject: Avertissement de limtite de quota
Votre boite aux lettres a atteind $PERCENT% de sa taille. Vous devriez supprimer quelques messages du serveur.
EOF

Rendre le script executable

# chmod +x /usr/local/bin/quota-warning.sh

Creer le fichier de configuration dovecot-sql.conf.ext

/usr/local/etc/dovecot/dovecot-sql.conf.ext
driver = mysql
connect = host=127.0.0.1 dbname=postfix user=utilisateur_postfix password=mot_de_passe_postfix
default_pass_scheme = MD5-CRYPT

user_query = SELECT CONCAT('/mail/', maildir) AS home, 'maildir:~/' as mail, '5000' AS uid, '5000' AS gid,\
    concat('*:bytes=', quota) AS quota_rule\
    FROM mailbox WHERE username='%u' AND domain='%d' AND active=1

password_query = SELECT password,CONCAT('/mail/', maildir) AS userdb_home,\
    '5000' AS userdb_uid, '5000' AS userdb_gid, allow_nets,\
    concat('*:bytes=', quota) AS userdb_quota_rule\
    FROM mailbox WHERE username='%u' AND domain='%d' AND active=1

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