DMARC requires one valid DKIM

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

@@ -2152,11 +2152,15 @@ public class MessageHelper {
             if (val.length > 0) {
                 if ("fail".equals(val[0]))
                     result = false;
-                else if ("pass".equals(val[0]))
+                else if ("pass".equals(val[0])) {
+                    // https://www.rfc-editor.org/rfc/rfc7489#section-3.1.1
+                    if ("dkim".equals(type))
+                        return true;
                     if (result == null)
                         result = true;
                 }
             }
+        }
 
         return result;
     }