diff --git a/samples/parse-records.js b/samples/parse-records.js
index 0c3fdfe..86eecfd 100644
--- a/samples/parse-records.js
+++ b/samples/parse-records.js
@@ -34,6 +34,9 @@ file.trim().split(/\n/).forEach(function (line) {
   if (/^(TXT)$/.test(type)) {
     data = [ thing ];
   }
+  if (/^(MX)$/.test(type)) {
+    exchange = thing;
+  }
   if (/^(MX|SRV)$/.test(type)) {
     priority = json.priority || 10;
   }