diff --git a/app/build/dovecot/conf/all_before.sieve b/app/build/dovecot/conf/all_before.sieve
new file mode 100644
index 0000000..7d2e57e
--- /dev/null
+++ b/app/build/dovecot/conf/all_before.sieve
@@ -0,0 +1,5 @@
+require ["fileinto", "mailbox"];
+if header :contains "X-Spam-Flag" "YES" {
+    fileinto :create "Junk";
+}
+
diff --git a/app/build/dovecot/conf/dovecot-ldap.sample.conf b/app/build/dovecot/conf/dovecot-ldap.sample.conf
new file mode 100644
index 0000000..472d5e8
--- /dev/null
+++ b/app/build/dovecot/conf/dovecot-ldap.sample.conf
@@ -0,0 +1,8 @@
+hosts = ldap.example.com
+dn = cn=admin,dc=example,dc=com
+dnpass = s3cr3t
+base = dc=example,dc=com
+scope = subtree
+user_filter = (&(mail=%u)(&(objectClass=inetOrgPerson)(memberOf=cn=email,ou=groups,dc=example,dc=com)))
+pass_filter = (&(mail=%u)(&(objectClass=inetOrgPerson)(memberOf=cn=email,ou=groups,dc=example,dc=com)))
+user_attrs = mail=/var/mail/%{ldap:mail}
diff --git a/app/build/dovecot/conf/dovecot.conf b/app/build/dovecot/conf/dovecot.conf
new file mode 100644
index 0000000..0d5068c
--- /dev/null
+++ b/app/build/dovecot/conf/dovecot.conf
@@ -0,0 +1,79 @@
+auth_mechanisms = plain login
+auth_username_format = %u
+log_timestamp = "%Y-%m-%d %H:%M:%S "
+mail_location = maildir:/var/mail/%u
+mail_privileged_group = mail
+
+log_path = /dev/stderr
+info_log_path = /dev/stdout
+debug_log_path = /dev/stdout
+
+protocols = imap sieve lmtp
+
+ssl_cert = < /etc/ssl/certs/dovecot.crt
+ssl_key = < /etc/ssl/private/dovecot.key
+
+service auth {
+ inet_listener {
+   port = 1337
+ }
+}
+
+passdb {
+  args = /etc/dovecot/dovecot-ldap.conf
+  driver = ldap
+}
+
+service lmtp {
+  inet_listener lmtp {
+    address = 0.0.0.0
+    port = 24
+  }
+}
+
+service imap-login {
+  inet_listener imap {
+    port = 143
+  }
+  inet_listener imaps {
+    port = 993
+  }
+}
+
+userdb {
+  args = uid=mailstore gid=mailstore home=/var/mail/%u
+  driver = static
+}
+
+protocol imap {
+  mail_plugins = $mail_plugins imap_sieve
+}
+
+protocol lda {
+  auth_socket_path = /var/run/dovecot/auth-master
+  info_log_path = /var/log/dovecot-deliver.log
+  log_path = /var/log/dovecot-deliver-errors.log
+  postmaster_address = postmaster@deuxfleurs.fr
+  mail_plugins = $mail_plugins sieve
+}
+
+plugin {
+  sieve = file:~/sieve;active=~/dovecot.sieve
+  sieve_before = /etc/dovecot/all_before.sieve
+
+  # antispam learn
+  sieve_plugins = sieve_imapsieve sieve_extprograms
+  sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment +vnd.dovecot.debug
+  sieve_pipe_bin_dir = /usr/bin
+
+  imapsieve_mailbox1_name = Junk
+  imapsieve_mailbox1_causes = COPY FLAG APPEND
+  imapsieve_mailbox1_before = file:/etc/dovecot/report-spam.sieve
+
+  imapsieve_mailbox2_name = *
+  imapsieve_mailbox2_from = Spam
+  imapsieve_mailbox2_causes = COPY APPEND
+  imapsieve_mailbox2_before = file:/etc/dovecot/report-ham.sieve
+
+}
+
diff --git a/app/build/dovecot/conf/report-ham.sieve b/app/build/dovecot/conf/report-ham.sieve
new file mode 100644
index 0000000..c5a994a
--- /dev/null
+++ b/app/build/dovecot/conf/report-ham.sieve
@@ -0,0 +1,17 @@
+require ["vnd.dovecot.pipe", "copy", "imapsieve", "environment", "variables", "vnd.dovecot.debug"];
+
+if environment :matches "imap.mailbox" "*" {
+  set "mailbox" "${1}";
+}
+
+if string "${mailbox}" "Trash" {
+  stop;
+}
+
+if environment :matches "imap.user" "*" {
+  set "username" "${1}";
+}
+
+pipe :copy "sa-learn" [ "--ham", "-u", "debian-spamd" ];
+debug_log "ham reported by ${username}";
+
diff --git a/app/build/dovecot/conf/report-spam.sieve b/app/build/dovecot/conf/report-spam.sieve
new file mode 100644
index 0000000..1be7389
--- /dev/null
+++ b/app/build/dovecot/conf/report-spam.sieve
@@ -0,0 +1,9 @@
+require ["vnd.dovecot.pipe", "copy", "imapsieve", "environment", "variables", "vnd.dovecot.debug"];
+
+if environment :matches "imap.user" "*" {
+  set "username" "${1}";
+}
+
+pipe :copy "sa-learn" [ "--spam", "-u", "debian-spamd"];
+debug_log "spam reported by ${username}";
+