diff --git a/sympa/miaou/miaou-migrate-sympa-from-container b/sympa/miaou/miaou-migrate-sympa-from-container
index c5923e2..06fd065 100755
--- a/sympa/miaou/miaou-migrate-sympa-from-container
+++ b/sympa/miaou/miaou-migrate-sympa-from-container
@@ -61,28 +61,23 @@ EOF
 }
 
 function get_container_net0 {
-	local vmid=$(pct-lookup $CONTAINER)
-	local vm_conf_file="/etc/pve/nodes/$(hostname)/lxc/$vmid.conf"
-	SYMPA_NET0=$(grep ^net0 $vm_conf_file)
+	OLD_VMID=$(pct-lookup $CONTAINER)
+	SYMPA_NET0=$(pct config $OLD_VMID | grep ^net0 | cut -d ' ' -f2)
 	echo $SYMPA_NET0
 }
 
-function stop_old_container {
-	pct-stop $CONTAINER
+function rename_old_container {
+	pct set $OLD_VMID --delete net0
 	pct-rename $CONTAINER $CONTAINER.9
-	sleep 10 # wait until rename action takes place
 }
 
 function create_new_container {
 	miaou-create $CONTAINER
 
 	local vmid=$(pct-lookup $CONTAINER)
-	local vm_conf_file="/etc/pve/nodes/$(hostname)/lxc/$vmid.conf"
-	local net1="net1: $(grep ^net0 $vm_conf_file | cut -d' ' -f2 | sed 's/name=eth0/name=eth1/')"
-
-	pct stop $vmid
-	/opt/miaou-bash/tools/append_or_replace "^net0.*$" "$SYMPA_NET0\n$net1" $vm_conf_file
-	pct start $vmid
+	local net1="net1: $(pct config $vmid | grep ^net0 | cut -d ' ' -f2 | sed 's/name=eth0/name=eth1/')"
+	pct set $vmid --net0 $SYMPA_NET0
+	pct set $vmid --net1 $net1
 }
 
 function import_from_archive {
@@ -97,17 +92,10 @@ assert_proxmox
 assert_container_sympa_debian9
 export_sympa
 get_container_net0
-stop_old_container
+rename_old_container
 create_new_container
 import_from_archive
 
-# 5. install sympa
-# 6. import old data
-# 7. fix_dmarc_off + fix_dkim_global_on
 # 8. fix external origin
 # 		allowed_external_origin *
 # 		(https://gitlab.cemea.org/cemeaweb/khazad-dum/-/issues/110)
-
-# "$BASEDIR"/miaou-install-sympa "$CONTAINER"
-# echo "launch the import process"
-# miaou-exec $CONTAINER -- /opt/miaou-sympa/tools/sympa_import.bash "/root/$import_base"
diff --git a/sympa/resources/tools/sympa_import.bash b/sympa/resources/tools/sympa_import.bash
index 0b24af2..5f4c2cc 100755
--- a/sympa/resources/tools/sympa_import.bash
+++ b/sympa/resources/tools/sympa_import.bash
@@ -238,6 +238,16 @@ function configure_postfix {
 	/opt/miaou-bash/tools/append_or_replace "^myhostname =.*$" "myhostname = $SYMPA_DOMAIN" /etc/postfix/main.cf
 	/opt/miaou-bash/tools/append_or_replace "^alias_maps =.*$" "alias_maps = hash:/etc/aliases, hash:/etc/mail/sympa/aliases" /etc/postfix/main.cf
 	/opt/miaou-bash/tools/append_or_replace "^alias_database =.*$" "alias_database = hash:/etc/aliases, hash:/etc/mail/sympa/aliases" /etc/postfix/main.cf
+
+	/opt/miaou-bash/tools/append_or_replace "^smtpd_tls_cert_file =.*$" "smtpd_tls_cert_file = /etc/letsencrypt/live/$SYMPA_DOMAIN/fullchain.pem"
+	/opt/miaou-bash/tools/append_or_replace "^smtpd_tls_key_file =.*$" "smtpd_tls_key_file = /etc/letsencrypt/live/$SYMPA_DOMAIN/privkey.pem"
+	/opt/miaou-bash/tools/append_or_replace "^smtpd_tls_security_level =.*$" "smtpd_tls_security_level = may"
+	/opt/miaou-bash/tools/append_or_replace "^smtpd_tls_received_header =.*$" "smtpd_tls_received_header = yes"
+	/opt/miaou-bash/tools/append_or_replace "^smtpd_tls_loglevel =.*$" "smtpd_tls_loglevel = 1"
+
+	/opt/miaou-bash/tools/append_or_replace "^smtp_tls_cert_file =.*$" "smtp_tls_cert_file = /etc/letsencrypt/live/$SYMPA_DOMAIN/fullchain.pem"
+	/opt/miaou-bash/tools/append_or_replace "^smtp_tls_key_file =.*$" "smtp_tls_key_file = /etc/letsencrypt/live/$SYMPA_DOMAIN/privkey.pem"
+	/opt/miaou-bash/tools/append_or_replace "^smtp_tls_security_level =.*$" "smtp_tls_security_level = may"
 }
 
 function import {