diff --git a/roles/dovecot/files/dovecot.conf b/roles/dovecot/files/dovecot.conf
index 4fafae7..1f0f234 100644
--- a/roles/dovecot/files/dovecot.conf
+++ b/roles/dovecot/files/dovecot.conf
@@ -1,62 +1,71 @@
-# 2.2.13: /etc/dovecot/dovecot.conf
-# ajout de lmtp (service pour déterminer la socket, protocol pour récupérer les mêmes fonctions que le LDA)
-# ajout de auth_username_format = %Ln pour vérifier que l'utilisateur est bien dans la base locale en passant par son nom et non par autre chose…
-# 2018-08-20	mortal	réintégration du fichier séparé 15-mailbox.conf + nettoyage/réorganisation + réécriture sieve globale
-# OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.0 
+dovecot_config_version = "2.4.1"
+dovecot_storage_version = "2.4.1"
 
 listen = *,[::]
 
 protocols = imap lmtp
 
-ssl_cert = </etc/x509/imap.libertus.eu/fullchain.cer
-ssl_key = </etc/x509/imap.libertus.eu/imap.libertus.eu.key
+ssl = required
+ssl_server_cert_file = /etc/x509/imap.libertus.eu/fullchain.cer
+ssl_server_key_file = /etc/x509/imap.libertus.eu/imap.libertus.eu.key
 
 #auth_debug=yes
 #auth_debug_passwords=yes
 
-auth_username_format = %Ln
+auth_username_format = %{ user | username | lower }
 
-passdb {
+mail_driver = maildir
+mail_path = %{home}/Maildir
+
+passdb pam {
   driver = pam
 }
 
-userdb {
+userdb passwd {
   driver = passwd
 }
 
-plugin {
-  sieve = ~/sieve/default.sieve
-  sieve_dir = ~/sieve
-  sieve_before = /etc/dovecot/before.sieve
+sieve_script personal {
+  path = ~/sieve
+  active_path = ~/sieve/default.sieve
 }
 
+sieve_script before {
+  type = before
+  path = /etc/dovecot/before.sieve
+}
 
 service auth {
-  inet_listener {
-    address = * [::]
+  inet_listener auth {
     port = 26
   }
 }
 
-protocol sieve {
-  mail_location = maildir:~/Maildir
-}
-
 service lmtp {
  inet_listener ltmp {
-    address = 127.0.0.1 ::1
     port = 24
  }
 }
 
+protocol sieve {
+}
+
+protocol imap {
+  mail_plugins {
+    imap_sieve = yes
+  }
+}
+
 protocol lmtp {
- mail_location = maildir:~/Maildir
- mail_plugins = sieve
+ mail_plugins {
+   lmtp_sieve = yes
+  }
 }
 
 protocol lda {
-  mail_location = maildir:~/Maildir
-  mail_plugins = sieve
+  mail_plugins {
+    lda_sieve = yes
+  }
   postmaster_address = postmaster@example.com
 }
 
@@ -83,4 +92,3 @@ namespace inbox {
     special_use = \Sent
   }
 }
-