Fix errors handling DKIM signatures and DMARC proofs.

install_amavis.sh

@@ -5116,6 +5116,8 @@ while IFS='' read -r _line || [[ -n $_line ]] ; do
 smtp      inet  n       -       y       -       -       smtpd
    -o smtpd_proxy_filter=127.0.0.1:10024
    -o content_filter=
+   -o smtpd_milters=
+   -o non_smtpd_milters=
 EOF
       if [[ "$SASL_AUTH_ENABLED" = "no" ]] ; then
          cat >> $postfix_master_cf << EOF