add maildomain from customfield

app/Http/Actions/CreateAccount.php

@@ -37,6 +37,12 @@ class CreateAccount extends AddonController
              */
             $this->checkExtensionOrThrowError();
 
+            //update domain
+            if($params['customfields']['maildomain']){
+                $this->hosting()->domain = $params['customfields']['maildomain'];
+                $this->hosting()->save();
+            }
+
             /**
              * run zimbra service
              */