Filter/clarify exceptions

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

@@ -170,7 +170,7 @@ public class ApplicationEx extends Application {
         ignore.add("java.net.ConnectException");
         ignore.add("java.net.SocketTimeoutException");
         ignore.add("java.net.SocketException");
-        // android.accounts.OperationCanceledException
+        ignore.add("android.accounts.OperationCanceledException");
 
         ignore.add("javax.mail.StoreClosedException");
         ignore.add("javax.mail.FolderClosedException");
@@ -179,7 +179,7 @@ public class ApplicationEx extends Application {
         ignore.add("javax.mail.MessageRemovedException");
         ignore.add("javax.mail.internet.AddressException");
 
-        ignore.add("android.accounts.OperationCanceledException");
+        ignore.add("java.nio.charset.MalformedInputException");
 
         config.setIgnoreClasses(ignore.toArray(new String[0]));
 

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

@@ -1061,7 +1061,9 @@ class Core {
                                     }
                             } else {
                                 for (Response response : responses)
-                                    if (response.isNO() || response.isBAD() || response.isBYE())
+                                    if (response.isBYE())
+                                        return new MessagingException("UID FETCH", new IOException(response.toString()));
+                                    else if (response.isNO() || response.isBAD())
                                         return new MessagingException(response.toString());
                                 return new MessagingException("UID FETCH failed");
                             }

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

@@ -601,11 +601,15 @@ public class MessageHelper {
                 return null;
 
             // https://www.ietf.org/rfc/rfc2368.txt
+            try {
                 MailTo to = MailTo.parse(list.substring(1, list.length() - 1));
                 if (to.getTo() == null)
                     return null;
 
                 return new Address[]{new InternetAddress(to.getTo().split(",")[0])};
+            } catch (android.net.ParseException ex) {
+                throw new ParseException(list);
+            }
         } catch (android.net.ParseException ex) {
             Log.w(ex);
             return null;