diff --git a/deployment/primary-dnsmanagerd-to-powerdns.sh b/deployment/primary-dnsmanagerd-to-powerdns.sh
index f16aa42..cfbe7ba 100755
--- a/deployment/primary-dnsmanagerd-to-powerdns.sh
+++ b/deployment/primary-dnsmanagerd-to-powerdns.sh
@@ -4,6 +4,11 @@ export PATH=/bin:/sbin:/usr/bin:/usr/sbin
 # Copying files from the dnsmanagerd bind9 directory to the powerdns directory.
 PDNSDIR="/var/powerdns/"
 DNSMANDIR="/tmp/DATA-dnsmanagerd/bind9-zones/"
+LOGFILE="/tmp/invalid-domains"
+
+test_domain_validity() {
+	named-checkzone $1 $DNSMANDIR/$1 1>/dev/null 2>/dev/null
+}
 
 local_update() {
 	echo "update domain $1"
@@ -20,7 +25,12 @@ action() {
 
 	echo $event | grep "MOVED_TO" >/dev/null
 	if [ $? -eq 0 ]; then
-		local_update $file
+		test_domain_validity $file
+		if [ $? -eq 0 ]; then
+			local_update $file
+		else
+			echo "invalid domain: $file" >> $LOGFILE
+		fi
 	fi
 
 	echo $event | grep "DELETE" >/dev/null