diff --git a/Linux/Messagerie/mail.sh b/Linux/Messagerie/mail.sh
index f33a3e2..80b19e7 100644
--- a/Linux/Messagerie/mail.sh
+++ b/Linux/Messagerie/mail.sh
@@ -56,6 +56,7 @@ then
 	echo "###############################################"
 	apt-get install mariadb-server mariadb-client expect -y
 	echo "-- Installation de MariaDB terminé !"
+    debconf-set-selections <<< "postfix postfix/mailname string $HOSTNAME"
     debconf-set-selections <<< "postfix postfix/main_mailer_type string 'No configuration'"
     apt-get install postfix -y
 	echo "-- Installation de Postfix terminé !"