diff -r a4e11829f96e -r 8fdd1e3a6bc3 lib/Nagios/Check/DNS/delegation.pm
--- a/lib/Nagios/Check/DNS/delegation.pm	Thu Jan 08 00:04:06 2015 +0100
+++ b/lib/Nagios/Check/DNS/delegation.pm	Fri Jan 16 16:42:13 2015 +0100
@@ -127,20 +127,22 @@
 
     my (@errs, @ns);
     my @our = eval { sort +ns($domain, nameservers => [$reference], aa => 1, override => $override) };
-    push @errs, $@ if $@;
+    if (chomp $@) {
+        push @errs, $@;
+        push @our, $@;
+    }
 
     my @their = eval { sort +ns($domain) };
-    push @errs, $@ if $@;
-
-    if (@errs) {
-        chomp @errs;
-        die join(', ' => @errs) . "\n";
+    if (chomp $@) {
+        push @errs, $@;
+        push @their, $@;
     }
-    
-    if ("@our" ne "@their") {
+
+    if (@errs or "@our" ne "@their") {
         local $" = ', ';
-        die sprintf "NS differ (%s @our) vs (public @their)\n",
+        die sprintf "NS differ (%s: @our) vs (public: @their)\n",
             $override->{$domain} ? 'override' : 'our';
+    
     }
 
     @ns = uniq sort @our, @their;