this script only install now

mailserver.sh

@@ -37,7 +37,6 @@ install_exim() {
     /usr/share/doc/exim4-base/examples/exim-gencert
     openssl genrsa -out /etc/exim4/dkim.key 2048
     install_restart
-    gen_public_dns
 }
 
 install_spamassassin() {
@@ -68,34 +67,20 @@ install_restart() {
     service exim4 restart
 }
 
-gen_public_dns() {
-    DNS=$(openssl rsa -in /etc/exim4/dkim.key -pubout)
-    DNS=$(echo ${DNS} | sed "s/ //g" | sed "s/.*Y-----\(.*\)-----E.*/\1/g")
-    echo -e "${YEL}Please put these pointers on your DNS provider :${STD}"
-    echo -e '\t\t10800 IN MX 10 <domain>'
-    echo -e '\t\t10800 IN TXT "v=spf1 a -all"'
-    echo -e '_domainkey\t10800 IN TXT "o=~; r=postmaster@<domain>"'
-    echo -e "x._domainkey\t10800 IN TXT \"v=DKIM1; k=rsa; p=${DNS}\""
-    echo -e '_dmarc\t\t10800 IN TXT "v=DMARC1; p=quarantine"'
-    read -p "Press [Enter] key to continue..."
-}
-
 install_mailserver() {
     echo "Do you want to install extra software ?"
     echo "1. None"
     echo "2. SpamAssassin (antispam)"
     echo "3. ClamAV (antivirus)"
     echo "4. Both SpamAssassin and ClamAV"
-    echo "5. Show DNS config"
-    echo "6. Exit"
-    read -p "Enter choice [1 - 6] " choice
+    echo "5. Exit"
+    read -p "Enter choice [1 - 5] " choice
     case $choice in
         1) install_exim ;;
         2) install_exim && install_spamassassin ;;
         3) install_exim && install_clamav ;;
         4) install_exim && install_spamassassin && install_clamav ;;
-        5) gen_public_dns ;;
-        6) exit ;;
+        5) exit ;;
         *) clear && echo -e "${RED}Please enter a valid input${STD}" && install_mailserver ;;
     esac
 }