--- /dev/null
+diff -ruN ssmtp-2.60-old/arpadate.c ssmtp-2.60-new/arpadate.c
+--- ssmtp-2.60-old/arpadate.c 2002-12-08 18:30:11.000000000 +0100
++++ ssmtp-2.60-new/arpadate.c 2004-05-23 18:54:32.000000000 +0200
+@@ -79,7 +79,7 @@
+ time_t now;
+
+ /* RFC822 format string borrowed from GNU shellutils date.c */
+- const char *format = "%a, %_d %b %Y %H:%M:%S %z";
++ const char *format = "%a, %d %b %Y %H:%M:%S %z";
+
+ now = time(NULL);
+