diff --git twisted/names/client.py twisted/names/client.py
index e5e8176..f402b22 100644
--- twisted/names/client.py
+++ twisted/names/client.py
@@ -369,7 +369,24 @@ class Resolver(common.ResolverBase):
         the answers section, the authority section, and the additional section.
         """
         if message.trunc:
-            return self.queryTCP(message.queries).addCallback(self.filterAnswers)
+            timeout = 10
+            if isinstance(message.trunc, tuple):
+                # Truncated message got from UDP server as trunc is an address and not a bool
+                # NOTE: UDP server should be also a TCP server (on the address and port) as required by RFCs
+                addr = message.trunc
+                # Try to reuse a connection already established with the server
+                for connection in self.connections:
+                    if connection.transport.addr == addr:
+                        return connection.query(message.queries, timeout).addCallback(self.filterAnswers)
+                # Build a new connection with the server
+                deferred = defer.Deferred()
+                self._reactor.connectTCP(addr[0], addr[1], self.factory)
+                self.pending.append((deferred, message.queries, timeout))
+                return deferred.addCallback(self.filterAnswers)
+            # Don't use this call as it will establish the connection with nother server,
+            # which is more than likely not able to answer the request.
+            # TODO If here, it is probably a truncated message got from TCP!
+            return self.queryTCP(message.queries, timeout).addCallback(self.filterAnswers)
         if message.rCode != dns.OK:
             return failure.Failure(self.exceptionForCode(message.rCode)(message))
         return (message.answers, message.authority, message.additional)
diff --git twisted/names/dns.py twisted/names/dns.py
index b6bc1c1..4e48244 100644
--- twisted/names/dns.py
+++ twisted/names/dns.py
@@ -2738,6 +2738,9 @@ class DNSDatagramProtocol(DNSMixin, protocol.DatagramProtocol):
         m = Message()
         try:
             m.fromStr(data)
+            m.maxSize = self.transport.maxPacketSize
+            if m.trunc:
+                m.trunc = addr # will be used for TCP
         except EOFError:
             log.msg("Truncated packet (%d bytes) from %s" % (len(data), addr))
             return
diff --git twisted/names/test/test_client.py twisted/names/test/test_client.py
index 39175c1..0f2135b 100644
--- twisted/names/test/test_client.py
+++ twisted/names/test/test_client.py
@@ -1059,7 +1059,7 @@ class FilterAnswersTests(unittest.TestCase):
         m = dns.Message(trunc=True)
         m.addQuery(b'example.com')
 
-        def queryTCP(queries):
+        def queryTCP(queries, timeout = 10):
             self.assertEqual(queries, m.queries)
             response = dns.Message()
             response.answers = ['answer']
diff --git twisted/names/test/test_rootresolve.py twisted/names/test/test_rootresolve.py
index cffb46c..334734c 100644
--- twisted/names/test/test_rootresolve.py
+++ twisted/names/test/test_rootresolve.py
@@ -119,6 +119,10 @@ class MemoryDatagramTransport(object):
         """
         pass
 
+    @property
+    def maxPacketSize(self):
+        return self._maxPacketSize
+
 
 verifyClass(IUDPTransport, MemoryDatagramTransport)
 
diff --git twisted/test/proto_helpers.py twisted/test/proto_helpers.py
index 3b0d27f..7ff5e6a 100644
--- twisted/test/proto_helpers.py
+++ twisted/test/proto_helpers.py
@@ -100,10 +100,14 @@ class FakeDatagramTransport:
 
     def __init__(self):
         self.written = []
+        self._maxPacketSize = 512
 
     def write(self, packet, addr=noAddr):
         self.written.append((packet, addr))
 
+    @property
+    def maxPacketSize(self):
+        return self._maxPacketSize
 
 
 @implementer(ITransport, IConsumer, IPushProducer)