Update MX records to use AWS SMTP

domains/trix.json

@@ -5,7 +5,12 @@
     },
     "records": {
         "CNAME": "bio-81b.pages.dev",
-        "MX": ["mx1.improvmx.com", "mx2.improvmx.com"],
+        "MX": [
+            {
+                "target": "inbound-smtp.ap-northeast-1.amazonaws.com",
+                "priority": 9
+            }
+        ],
         "TXT": ["v=spf1 include:spf.improvmx.com ~all"]
     },
     "proxied": true