diff -ur sendmail-8.12.10/vacation/vacation.c sendmail-8.12.10-jm/vacation/vacation.c
--- sendmail-8.12.10/vacation/vacation.c	Fri Nov  1 11:48:55 2002
+++ sendmail-8.12.10-jm/vacation/vacation.c	Thu Dec 11 15:29:48 2003
@@ -66,7 +66,11 @@
 #define	VMSG	".vacation.msg"		/* vacation message */
 #define SECSPERDAY	(60 * 60 * 24)
 #define DAYSPERWEEK	7
-
+#ifdef _FFR_MIN_INTERVAL
+#define SECSPERHOUR	(60 * 24)
+#define SECSPERMIN	(60 * 1)
+#define SECSPERWEEK	(60 * 60 * 24 * 7)
+#endif /* _FFR_MIN_INTERVAL */
 typedef struct alias
 {
 	char *name;
@@ -234,7 +238,19 @@
 		  case 'r':
 			if (isascii(*optarg) && isdigit(*optarg))
 			{
-				interval = atol(optarg) * SECSPERDAY;
+				unsigned int multiple = SECSPERDAY;
+#if _FFR_MIN_INTERVAL
+				
+				if(strcasestr(optarg,"m"))
+					multiple = SECSPERMIN;
+
+				if(strcasestr(optarg,"h"))
+					multiple = SECSPERHOUR;
+					
+				if(strcasestr(optarg,"w"))
+					multiple = SECSPERWEEK;
+#endif /* _FFR_MIN_INTERVAL */				
+				interval = atol(optarg) * multiple;
 				if (interval < 0)
 					ufail++;
 			}