Merge pull request #29468 from shaoyanji/main

wanting to get a improvmx email forwarding going with a subsubdomain

domains/mail.shaoyanji.json

@@ -0,0 +1,10 @@
+{
+    "owner": {
+        "username": "shaoyanji",
+        "email": "jisifu@gmail.com"
+    },
+    "records": {
+        "MX": ["mx1.improvmx.com", "mx2.improvmx.com"],
+        "TXT": ["v=spf1 include:spf.improvmx.com ~all"]
+    }
+}