Displaying email hostnames

src/freedombone-controlpanel

     trap "rm -f $data" 0 1 2 5 15
     dialog --title $"Email Domains" \
            --backtitle $"Freedombone Control Panel" \
-           --inputbox $"Enter the list of email domains to use, separated by semicolons" 8 60 2>$data
+           --inputbox $"Enter the list of email domains to use, separated by semicolons" 8 60 $email_hostnames 2>$data
     sel=$?
     case $sel in
         0)
             emailhostnames=$(<$data)
             if [ ${#emailhostnames} -gt 2 ]; then
-                if [[ "$emailhostnames" == *"."* ]]; then
-                    if [[ "$emailhostnames" != *" "* ]]; then
-                        sed -i "s|dc_other_hostnames=.*|dc_other_hostnames='$emailhostnames'|g" /etc/exim4/update-exim4.conf.conf
-                        update-exim4.conf
-                        dpkg-reconfigure --frontend noninteractive exim4-config
-                        systemctl restart saslauthd
-                        dialog --title $"Email Domains" \
-                               --backtitle $"Freedombone Control Panel" \
-                               --msgbox $"Email domains were changed" 6 50
-                    else
-                        dialog --title $"Email Domains not set" \
-                               --backtitle $"Freedombone Control Panel" \
-                               --msgbox $"There should be no spaces in the list" 6 50
+                if [[ "$email_hostnames" != "$emailhostnames" ]]; then
+                    if [[ "$emailhostnames" == *"."* ]]; then
+                        if [[ "$emailhostnames" != *" "* ]]; then
+                            sed -i "s|dc_other_hostnames=.*|dc_other_hostnames='$emailhostnames'|g" /etc/exim4/update-exim4.conf.conf
+                            update-exim4.conf
+                            dpkg-reconfigure --frontend noninteractive exim4-config
+                            systemctl restart saslauthd
+                            dialog --title $"Email Domains" \
+                                   --backtitle $"Freedombone Control Panel" \
+                                   --msgbox $"Email domains were changed" 6 50
+                        else
+                            dialog --title $"Email Domains not set" \
+                                   --backtitle $"Freedombone Control Panel" \
+                                   --msgbox $"There should be no spaces in the list" 6 50
+                        fi
                     fi
                 fi
             fi