Discovery: check if MX target exists

3 years ago · e1a701b264
parent 2470316fd0
commit e1a701b264
1 changed files with 4 additions and 1 deletions
--- a/app/src/main/java/eu/faircode/email/EmailProvider.java
+++ b/app/src/main/java/eu/faircode/email/EmailProvider.java
@ -308,8 +308,9 @@ public class EmailProvider implements Parcelable {
                }

            for (DnsHelper.DnsRecord record : records)
-                if (!TextUtils.isEmpty(record.name)) {
+                try {
                    String target = record.name.toLowerCase(Locale.ROOT);
+                    InetAddress.getByName(target);

                    EmailProvider mx1 = new EmailProvider(domain);
                    mx1.imap.score = 0;
@ -334,6 +335,8 @@ public class EmailProvider implements Parcelable {
                    candidates.add(mx2);

                    break;
+                } catch (UnknownHostException ex) {
+                    Log.w(ex);
                }
        } catch (Throwable ex) {
            Log.w(ex);