diff --git a/scripts/upgrade b/scripts/upgrade
index b7e7806..a6f8ddd 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -176,10 +176,13 @@ if [ ! -e $final_path/lang/it_IT ]; then
 ln -s $final_path/lang/it $final_path/lang/it_IT
 fi
 
+#setting postfix to use virtual aliases file
+# Add postfix configuration hook and regen postfix conf
 #setting postfix to use virtual aliases file
 # Add postfix configuration hook and regen postfix conf
 cp -R ../sources/hooks/conf_regen/98-postfix_emailpoubelle /usr/share/yunohost/hooks/conf_regen/
-yunohost service regen-conf postfix
+mv /etc/postfix/main.cf /etc/postfic/main.cf.emailpoubelle.bak
+yunohost service regen-conf postfix -f
 
 #=================================================
 # SECURE FILES AND DIRECTORIES