From 21b83d8bc4b4ac54dbc606a415850ec0dd407d98 Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Tue, 2 Jan 2024 19:26:41 +0100
Subject: [PATCH] Fixed MX check

---
 app/src/main/java/eu/faircode/email/DnsHelper.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/eu/faircode/email/DnsHelper.java b/app/src/main/java/eu/faircode/email/DnsHelper.java
index e0d2cb2a46..5eb64fa2ad 100644
--- a/app/src/main/java/eu/faircode/email/DnsHelper.java
+++ b/app/src/main/java/eu/faircode/email/DnsHelper.java
@@ -81,7 +81,9 @@ public class DnsHelper {
             String domain = UriHelper.getEmailDomain(email);
             if (domain == null)
                 continue;
-            lookup(context, domain, "mx", CHECK_TIMEOUT, MAX_FOLLOW, false);
+            DnsRecord[] records = lookup(context, domain, "mx", CHECK_TIMEOUT, MAX_FOLLOW, false);
+            if (records.length == 0)
+                throw new UnknownHostException(domain);
         }
     }