Apply native DKIM

app/src/main/java/eu/faircode/email/Core.java

@@ -3201,8 +3201,13 @@ class Core {
 
                         message.tls = helper.getTLS();
                         message.dkim = MessageHelper.getAuthentication("dkim", authentication);
-                        if (Boolean.TRUE.equals(message.dkim))
-                            message.dkim = helper.checkDKIMRequirements();
+                        if (Boolean.TRUE.equals(message.dkim)) {
+                            if (native_dkim && !BuildConfig.PLAY_STORE_RELEASE) {
+                                if (TextUtils.isEmpty(message.signedby))
+                                    message.dkim = false;
+                            } else
+                                message.dkim = helper.checkDKIMRequirements();
+                        }
                         message.spf = MessageHelper.getAuthentication("spf", authentication);
                         if (message.spf == null && helper.getSPF())
                             message.spf = true;
@@ -4554,11 +4559,6 @@ class Core {
                 db.endTransaction();
             }
 
-            if (BuildConfig.DEBUG &&
-                    message.signedby == null &&
-                    Boolean.TRUE.equals(message.dkim))
-                EntityOperation.queue(context, message, EntityOperation.FLAG, true, android.graphics.Color.RED);
-
             try {
                 EntityContact.received(context, account, folder, message);