*** vacation.c.orig     2019-08-24 05:47:49.000000000 -0500
--- vacation.c  2022-04-21 09:11:32.714278000 -0500
***************
*** 584,589 ****
--- 584,591 ----
        }
        close(pvect[0]);
        sfp = fdopen(pvect[1], "w");
+       fprintf(sfp, "Precedence: bulk\n");
+       fprintf(sfp, "Auto-Submitted: auto-replied\n" ); /* RFC-3834 */
        fprintf(sfp, "To: %s\n", from);
        while (fgets(buf, sizeof buf, mfp)) {
                char *s = strstr(buf, "$SUBJECT");