Update send.trix.json

domains/send.trix.json

@@ -4,7 +4,12 @@
         "email": "admin@trix.is-a.dev"
     },
     "records": {
-        "MX": ["feedback-smtp.ap-northeast-1.amazonses.com"],
+        "MX": [
+            {
+                "target": "feedback-smtp.ap-northeast-1.amazonses.com",
+                "priority": 10
+            }
+        ],
         "TXT": ["v=spf1 include:amazonses.com ~all"]
     }
 }