diff --git a/CHANGES b/CHANGES
index d3c3d33ead..8f0d16abeb 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+2984.	[bug]		Don't run MX checks when the target of the MX record
+			is ".".  [RT #22645]
+
 2983.	[bug]		Include "loadkeys" in rndc help output. [RT #22493]
 
 	--- 9.8.0a1 released ---
diff --git a/lib/dns/include/dns/zone.h b/lib/dns/include/dns/zone.h
index 842370d04f..7cfcc001dc 100644
--- a/lib/dns/include/dns/zone.h
+++ b/lib/dns/include/dns/zone.h
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: zone.h,v 1.178 2010/08/16 22:21:07 marka Exp $ */
+/* $Id: zone.h,v 1.179 2010/12/14 00:39:59 marka Exp $ */
 
 #ifndef DNS_ZONE_H
 #define DNS_ZONE_H 1
@@ -1686,7 +1686,7 @@ void
 dns_zone_setcheckmx(dns_zone_t *zone, dns_checkmxfunc_t checkmx);
 /*%<
  *	Set the post load integrity callback function 'checkmx'.
- *	'checkmx' will be called if the MX is not within the zone.
+ *	'checkmx' will be called if the MX TARGET is not within the zone.
  *
  * Require:
  *	'zone' to be a valid zone.
@@ -1705,8 +1705,8 @@ dns_zone_setchecksrv(dns_zone_t *zone, dns_checkmxfunc_t checksrv);
 void
 dns_zone_setcheckns(dns_zone_t *zone, dns_checknsfunc_t checkns);
 /*%<
- *	Set the post load integrity callback function 'checkmx'.
- *	'checkmx' will be called if the MX is not within the zone.
+ *	Set the post load integrity callback function 'checkns'.
+ *	'checkns' will be called if the NS TARGET is not within the zone.
  *
  * Require:
  *	'zone' to be a valid zone.
diff --git a/lib/dns/zone.c b/lib/dns/zone.c
index 9ca32c01b7..5697953977 100644
--- a/lib/dns/zone.c
+++ b/lib/dns/zone.c
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: zone.c,v 1.577 2010/12/02 23:22:42 marka Exp $ */
+/* $Id: zone.c,v 1.578 2010/12/14 00:39:59 marka Exp $ */
 
 /*! \file */
 
@@ -1750,6 +1750,12 @@ zone_check_mx(dns_zone_t *zone, dns_db_t *db, dns_name_t *name,
 	dns_name_t *foundname;
 	int level;
 
+	/*
+	 * "." means the services does not exist.
+	 */
+	if (dns_name_equal(name, dns_rootname))
+		return (ISC_TRUE);
+
 	/*
 	 * Outside of zone.
 	 */