--- sendmail-8.14.4/sendmail/conf.c		2009-12-18 18:25:12.000000000 +0100
+++ sendmail-8.14.4/sendmail/conf.c.switchfile	2010-01-03 23:08:27.000000000 +0100
@@ -972,7 +972,7 @@
 				if (p != NULL)
 					*p = '\0';
 #ifndef SM_NSSWITCH_DELIMS
-# define SM_NSSWITCH_DELIMS	" \t"
+# define SM_NSSWITCH_DELIMS	" \t:"
 #endif /* SM_NSSWITCH_DELIMS */
 				p = strpbrk(buf, SM_NSSWITCH_DELIMS);
 				if (p != NULL)