diff --git a/install_opendmarc.sh b/install_opendmarc.sh
index d2d91bc..d63800f 100755
--- a/install_opendmarc.sh
+++ b/install_opendmarc.sh
@@ -780,8 +780,30 @@ if $(grep -q -E "^\s*non_smtpd_milters\s*=\s*.*opendkim.sock" /etc/postfix/main.
       fi
    fi
 else
+
    echo_skipped
-   warn "Postfix is not adjusted. Complete Postfix configuration (main.cf) manually\!"
+   warn "non_smtpd_milters is not adjusted. Complete Postfix configuration (main.cf) manually\!"
+fi
+
+
+echononl "   Set Variable smtpd_milters at '/etc/postfix/main.cf'.."
+if $(grep -q -E "^\s*smtpd_milters\s*=\s*.*opendkim.sock" /etc/postfix/main.cf 2> /dev/null) ; then
+   if $(grep -q -E "^\s*smtpd_milters\s*=\s*.*$(basename "${opendmarc_socket_file}")" /etc/postfix/main.cf); then
+      echo_skipped
+   else
+      perl -i -n -p -e "s&^\s*(smtpd_milters\s*=.*opendkim.sock)&\1,local:/$(basename "${opendmarc_socket_dir}")/$(basename "${opendmarc_socket_file}")&" \
+         /etc/postfix/main.cf > $log_file 2>&1
+      if [[ $? -eq 0 ]] ; then
+         echo_ok
+         postfix_needs_restart=true
+      else
+         echo_failed
+         error "$(cat $log_file)"
+      fi
+   fi
+else
+   echo_skipped
+   warn "smtpd_milters was not adjusted. Complete Postfix configuration (main.cf) manually\!"
 fi
 
 
@@ -818,7 +840,7 @@ else
 
 # ======= Milter configuration =======
 
-# OpenDKIM
+# OpenDKIM, OpenDMARC
 
 milter_default_action = accept