diff --git a/install/alternc.install b/install/alternc.install
index 5e112be2..ab59d699 100644
--- a/install/alternc.install
+++ b/install/alternc.install
@@ -334,7 +334,7 @@ fi
 #populate alternc database with the mailname used by postfix to send mail for each vhost
 #
 mailname=`cat /etc/mailname`
-mysql_query "update table variable SET value="$mailname" where name='mailname_bounce';" 
+mysql_query "update table variable SET value='"$mailname"' where name='mailname_bounce';" 
 
 #######################################################################
 # Save installed files to check them during next install
diff --git a/install/mysql.sql b/install/mysql.sql
index 1da64057..2872786d 100644
--- a/install/mysql.sql
+++ b/install/mysql.sql
@@ -437,6 +437,9 @@ they log in. Set this to 0 or a "false" string to ignore.');
 INSERT IGNORE INTO `variable` (name, value, comment) VALUES ('new_email', 0,
 'An email will be sent to this address when new accounts are created if set.');
 
+INSERT IGNORE INTO `variable` (name, value, comment) VALUES ('mailname_bounce', '',
+'FQDN of the mail server, used to create vhost virtual mail_adress.');
+
 --
 -- Table structure for table `dbusers`
 --