install_postfix_advanced.sh: add SPF sender whitelist configuration

install_postfix_advanced.sh

@@ -2932,6 +2932,7 @@ if [[ -n "$(which policyd-spf)" ]]  ; then
    cat <<EOF >> /etc/postfix/main.cf
 # Check Postfix policy service ..
 #
+   check_client_access btree:/etc/postfix/spf_sender_whitelist
    check_policy_service unix:private/policy-spf
 EOF
 fi
@@ -3495,6 +3496,25 @@ else
    echo_failed
 fi
 
+if [[ -n "$(which policyd-spf)" ]]  ; then
+   _file="/etc/postfix/spf_sender_whitelist"
+   echononl "   Create file \"${_file}\""
+   cat <<EOF > ${_file}
+# (Sender) Whitelist from SPF (polidy-spf)
+
+# All mails from domain 'domain-robot.org' (including subdomains)
+domain-robot.org    OK
+EOF
+
+   postmap btree:${_file}
+   if [[ $? -eq 0 ]] ; then
+      echo_ok
+   else
+      echo_failed
+   fi
+
+fi
+
 echononl "   Create file \"client_allow_relay\""
 if [[ ! -f "/etc/postfix/client_allow_relay" ]]; then
    cat <<EOF > /etc/postfix/client_allow_relay