diff --git a/test/java/foundation/pEp/jniadapter/test/jni153/CTXMultiNode.java b/test/java/foundation/pEp/jniadapter/test/jni153/CTXMultiNode.java
new file mode 100644
index 0000000..1f2d99c
--- /dev/null
+++ b/test/java/foundation/pEp/jniadapter/test/jni153/CTXMultiNode.java
@@ -0,0 +1,239 @@
+package foundation.pEp.jniadapter.test.jni153;
+
+import foundation.pEp.jniadapter.Engine;
+import foundation.pEp.jniadapter.Message;
+import foundation.pEp.jniadapter.decrypt_message_Return;
+import foundation.pEp.jniadapter.test.utils.TestCallbacks;
+import foundation.pEp.jniadapter.test.utils.model.*;
+import foundation.pEp.jniadapter.test.utils.transport.fsmqmanager.FsMQIdentity;
+import foundation.pEp.jniadapter.test.utils.transport.fsmqmanager.FsMQManager;
+import foundation.pEp.jniadapter.test.utils.transport.fsmqmanager.FsMQMessage;
+import foundation.pEp.pitytest.AbstractTestContext;
+import foundation.pEp.pitytest.TestContextInterface;
+
+import java.util.List;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.stream.Collectors;
+
+import static foundation.pEp.pitytest.TestLogger.log;
+
+public class CTXMultiNode extends AbstractTestContext {
+    public Engine engine;
+    public TestCallbacks callbacks;
+    public Transport transport;
+
+    // Model
+    public TestModel model;
+
+    // Mappings
+    private NodeName ownNodeName;
+    private TestNode ownNode;
+    public TestIdentity myself;
+    public TestIdentity partner;
+
+
+    CTXMultiNode(NodeName ownNodeName) {
+        this.ownNodeName = ownNodeName;
+    }
+
+    @Override
+    public TestContextInterface init() throws Throwable {
+        // pEp
+        callbacks = new TestCallbacks();
+        engine = new Engine();
+        engine.setMessageToSendCallback(callbacks);
+        engine.setNotifyHandshakeCallback(callbacks);
+
+        // Model
+        model = setupModel();
+
+        // Setup Perspective
+        ownNode = model.getNode(ownNodeName);
+        myself = ownNode.getIdent();
+        partner = myself.getDefaultPartner();
+
+        // Transport
+        // Create own transport identity and Transport
+        FsMQIdentity transportIdent = myself.getTransportIdent(ownNodeName);
+        transport = new Transport(transportIdent, model.getAllIdents());
+
+        return this;
+    }
+
+    private TestModel setupModel() {
+        TestModel ret = new TestModel();
+
+        ret.getNode(NodeName.NODE_A1).setRole(Role.ALICE);
+        ret.getNode(NodeName.NODE_B1).setRole(Role.BOB);
+
+        ret.getIdent(Role.ALICE).setDefaultPartner(Role.BOB);
+        ret.getIdent(Role.BOB).setDefaultPartner(Role.ALICE);
+//        ret.getIdent(Role.CAROL).setDefaultPartner(Role.ALICE);
+
+        return ret;
+    }
+
+}
+
+class Transport {
+    private FsMQManager fsMQTransport = null;
+    private EncryptingSenderThread sender = null;
+    private DecryptingReceiverThread receiver = null;
+    private FsMQIdentity myself = null;
+    private List<TestIdentity> peers = null;
+
+    // Message queues
+    private LinkedBlockingQueue<Message> txQueue = new LinkedBlockingQueue<>();
+    private LinkedBlockingQueue<Message> rxQueue = new LinkedBlockingQueue<>();
+
+    public Transport(FsMQIdentity ownIdent, List<TestIdentity> peers) {
+        this.myself = ownIdent;
+        this.peers = peers;
+        this.sender = new EncryptingSenderThread(this, txQueue);
+        this.receiver = new DecryptingReceiverThread(this, rxQueue);
+        this.fsMQTransport = new FsMQManager(ownIdent);
+
+        for (TestIdentity ti : peers) {
+            fsMQTransport.identities.addAll(ti.getAllTransportIdents());
+        }
+    }
+
+    public void clearOwnQueue() {
+        fsMQTransport.clearOwnQueue();
+    }
+
+    public boolean canReceiveAsync() {
+        return !rxQueue.isEmpty();
+    }
+
+    public void sendAsync(Message msg) {
+        txQueue.add(msg);
+    }
+
+    public Message receiveAsyncNonBlocking() {
+        return rxQueue.remove();
+    }
+
+    public void sendRaw(String pEpAddress, String msg) {
+        //Find identity for address
+        List<TestIdentity> res = peers.stream().filter(i -> {
+            return i.pEpIdent.address.equals(pEpAddress);
+        }).collect(Collectors.toList());
+
+        if (res.size() > 1) {
+            throw new RuntimeException("Unknown Error");
+        } else if (res.size() <= 0) {
+            throw new RuntimeException("Unknown address");
+        }
+        TestIdentity id = res.get(0);
+
+        for (FsMQIdentity tID : id.getAllTransportIdents()) {
+            fsMQTransport.sendMessage(tID.getAddress(), msg);
+//            log("send() to: " + tID.getAddress());
+        }
+    }
+
+    public String receiveRaw() {
+        FsMQMessage rx = fsMQTransport.receiveMessage(2000);
+        return rx.getMsg();
+    }
+
+    public void start() {
+        sender.start();
+        receiver.start();
+    }
+}
+
+
+class EncryptingSenderThread extends Thread {
+    private Engine engine = null;
+    private Transport transport = null;
+    private LinkedBlockingQueue<Message> queue;
+
+    public EncryptingSenderThread(Transport transport, LinkedBlockingQueue queue) {
+        this.transport = transport;
+        this.queue = queue;
+    }
+
+    @Override
+    public void run() {
+        engine = new Engine();
+        Message msg;
+        String msgEnc;
+        while (true) {
+            try {
+                msg = queue.take();
+                if (msg.getTo().size() != 1) {
+                    throw new RuntimeException("Sorry, msg.To has to have exactly 1 receiver for now");
+                }
+                String to = msg.getTo().get(0).address;
+                msgEnc = encryptMessage(msg);
+                transport.sendRaw(to, msgEnc);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public String encryptMessage(Message msg) {
+        String longMessage = msg.getLongmsg();
+
+        Message msgEnc = engine.encrypt_message(msg, null, Message.EncFormat.PEP);
+        String encFormat;
+        String transportMsg;
+        if (msgEnc != null) {
+            encFormat = "CRYPT";
+            transportMsg = msgEnc.encodeMIME();
+        } else {
+            encFormat = "PLAIN";
+            transportMsg = msg.encodeMIME();
+        }
+        log("<- : [" + encFormat + "] - " + longMessage);
+        return transportMsg;
+    }
+}
+
+
+class DecryptingReceiverThread extends Thread {
+    private Engine engine = null;
+    private Transport transport = null;
+    private LinkedBlockingQueue<Message> queue;
+
+    public DecryptingReceiverThread(Transport transport, LinkedBlockingQueue queue) {
+        this.transport = transport;
+        this.queue = queue;
+    }
+
+    @Override
+    public void run() {
+        engine = new Engine();
+        String msg;
+        Message msgDec;
+        while (true) {
+            msg = transport.receiveRaw();
+            msgDec = decryptMessage(msg);
+            try {
+                queue.put(msgDec);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    private Message decryptMessage(String msg) {
+        Message msgIn = new Message(msg);
+        Message msgInDec = null;
+
+        decrypt_message_Return decRet = engine.decrypt_message(msgIn, null, 0);
+
+        msgInDec = decRet.dst;
+
+        String encFormat = "PLAIN";
+        if (!msgIn.getLongmsg().equals(msgInDec.getLongmsg())) {
+            encFormat = "CRYPT";
+        }
+
+        log("-> : [" + encFormat + "] - " + msgInDec.getLongmsg());
+        return msgInDec;
+    }
+}
\ No newline at end of file
diff --git a/test/java/foundation/pEp/jniadapter/test/jni153/Makefile b/test/java/foundation/pEp/jniadapter/test/jni153/Makefile
new file mode 100644
index 0000000..34409e7
--- /dev/null
+++ b/test/java/foundation/pEp/jniadapter/test/jni153/Makefile
@@ -0,0 +1,46 @@
+include ../../../../../../../Makefile.conf
+include ../Makefile.conf
+
+TEST_UNIT_NAME=jni153
+
+JAVA_CLASSES+= \
+ 	TestAlice.class \
+ 	TestBob.class \
+ 	CTXMultiNode.class
+
+.PHONY: pitytest compile alice bob test clean
+
+all: both compile
+
+pitytest:
+	$(MAKE) -C $(PITYTEST_DIR)
+
+both:
+	$(MAKE) bob&
+	$(MAKE) alice
+
+alice: compile clean-pep-home-alice
+	cd $(JAVA_CWD);pwd;HOME=$(JAVA_PEP_HOME_DIR_ALICE) $(JAVA) $(JAVA_PKG_BASENAME).$(TEST_UNIT_NAME).TestAlice
+
+bob: compile clean-pep-home-bob
+	cd $(JAVA_CWD);pwd;HOME=$(JAVA_PEP_HOME_DIR_BOB) $(JAVA) $(JAVA_PKG_BASENAME).$(TEST_UNIT_NAME).TestBob
+
+compile: $(JAVA_CLASSES) pitytest
+
+%.class: %.java
+	cd $(JAVA_CWD);$(JAVAC_CMD) -cp $(CLASSPATH) $(JAVA_PKG_BASEPATH)/$(TEST_UNIT_NAME)/$<
+
+clean:
+	rm -f $(JAVA_CLASSES)
+	rm -f *.class
+	rm -f *.log
+	rm -Rf .gnupg
+	rm -Rf .lldb
+
+clean-pep-home: clean-pep-home-alice clean-pep-home-bob
+
+clean-pep-home-alice:
+	rm -rf $(PEP_HOME_DIR_ALICE)/.pEp
+
+clean-pep-home-bob:
+	rm -rf $(PEP_HOME_DIR_BOB)/.pEp
diff --git a/test/java/foundation/pEp/jniadapter/test/jni153/TestAlice.java b/test/java/foundation/pEp/jniadapter/test/jni153/TestAlice.java
new file mode 100644
index 0000000..ae7f378
--- /dev/null
+++ b/test/java/foundation/pEp/jniadapter/test/jni153/TestAlice.java
@@ -0,0 +1,43 @@
+package foundation.pEp.jniadapter.test.jni153;
+
+import foundation.pEp.jniadapter.Message;
+import foundation.pEp.jniadapter.test.utils.AdapterTestUtils;
+import foundation.pEp.jniadapter.test.utils.model.NodeName;
+import foundation.pEp.pitytest.TestSuite;
+import foundation.pEp.pitytest.TestUnit;
+import foundation.pEp.pitytest.utils.TestUtils;
+
+import static foundation.pEp.pitytest.TestLogger.log;
+
+
+class TestAlice {
+    public static void main(String[] args) throws Exception {
+        TestSuite.getDefault().setVerbose(true);
+        TestSuite.getDefault().setTestColor(TestUtils.TermColor.GREEN);
+
+        CTXMultiNode JNI153Ctx = new CTXMultiNode(NodeName.NODE_A1);
+
+        new TestUnit<CTXMultiNode>("test", JNI153Ctx, ctx -> {
+            ctx.transport.clearOwnQueue();
+            ctx.myself.pEpIdent = ctx.engine.myself(ctx.myself.pEpIdent);
+            log(AdapterTestUtils.identityToString(ctx.myself.pEpIdent, true));
+
+            ctx.transport.start();
+
+            ctx.transport.sendAsync(AdapterTestUtils.newOutMessage(ctx.myself.pEpIdent, ctx.partner.pEpIdent, "UNIQUE_" + String.valueOf(0)));
+            int counter = 0;
+
+            while (true) {
+                while (ctx.transport.canReceiveAsync()) {
+                    ctx.transport.sendAsync(AdapterTestUtils.newOutMessage(ctx.myself.pEpIdent, ctx.partner.pEpIdent, "UNIQUE_" + String.valueOf(counter)));
+                    Message msg = ctx.transport.receiveAsyncNonBlocking();
+                    counter++;
+                }
+            }
+        });
+
+        TestSuite.getDefault().run();
+    }
+}
+
+
diff --git a/test/java/foundation/pEp/jniadapter/test/jni153/TestBob.java b/test/java/foundation/pEp/jniadapter/test/jni153/TestBob.java
new file mode 100644
index 0000000..773f2fc
--- /dev/null
+++ b/test/java/foundation/pEp/jniadapter/test/jni153/TestBob.java
@@ -0,0 +1,56 @@
+package foundation.pEp.jniadapter.test.jni153;
+
+import foundation.pEp.jniadapter.Engine;
+import foundation.pEp.jniadapter.Message;
+import foundation.pEp.jniadapter.test.utils.AdapterTestUtils;
+import foundation.pEp.jniadapter.test.utils.model.NodeName;
+import foundation.pEp.pitytest.TestSuite;
+import foundation.pEp.pitytest.TestUnit;
+import foundation.pEp.pitytest.utils.TestUtils;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import static foundation.pEp.pitytest.TestLogger.log;
+
+class TestBob {
+    public static void main(String[] args) throws Exception {
+        TestSuite.getDefault().setVerbose(true);
+        TestSuite.getDefault().setTestColor(TestUtils.TermColor.YELLOW);
+
+        CTXMultiNode JNI153Ctx = new CTXMultiNode(NodeName.NODE_B1);
+
+        new TestUnit<CTXMultiNode>("test", JNI153Ctx, ctx -> {
+            ExecutorService executorService = Executors.newFixedThreadPool(10);
+            ctx.transport.clearOwnQueue();
+            ctx.myself.pEpIdent = ctx.engine.myself(ctx.myself.pEpIdent);
+            log(AdapterTestUtils.identityToString(ctx.myself.pEpIdent, true));
+
+            ctx.transport.start();
+
+            int counter = 0;
+            while (true) {
+
+                while (ctx.transport.canReceiveAsync()) {
+                    Message msgRx = ctx.transport.receiveAsyncNonBlocking();
+                    log(AdapterTestUtils.identityToString(msgRx.getFrom(),true));
+                    ctx.transport.sendAsync(AdapterTestUtils.newOutMessage(ctx.myself.pEpIdent, msgRx.getFrom(), msgRx.getLongmsg() + " - ACK"));
+                    counter++;
+
+                    if (counter % 4 == 0) {
+                        executorService.submit(() -> {
+                            Engine eng = new Engine();
+                            log("Mistrusting");
+                            eng.keyMistrusted(msgRx.getFrom());
+
+                        });
+                    }
+                }
+            }
+        });
+
+        TestSuite.getDefault().run();
+    }
+
+
+}
diff --git a/test/java/foundation/pEp/jniadapter/test/utils/AdapterTestUtils.java b/test/java/foundation/pEp/jniadapter/test/utils/AdapterTestUtils.java
index 3fa3e08..bf058b0 100644
--- a/test/java/foundation/pEp/jniadapter/test/utils/AdapterTestUtils.java
+++ b/test/java/foundation/pEp/jniadapter/test/utils/AdapterTestUtils.java
@@ -338,6 +338,30 @@ public class AdapterTestUtils {
         return msg;
     }
 
+    public static Message newOutMessage(Identity from, Identity to, String longMessage) {
+        Message ret = new Message();
+        Vector<Identity> toList = new Vector<>();
+        toList.add(to);
+        ret.setTo(toList);
+        ret.setFrom(from);
+//        ret.setShortmsg();
+        ret.setLongmsg(longMessage);
+        ret.setDir(Message.Direction.Outgoing);
+        return ret;
+    }
+
+//    public static Message newInMessage(Identity from, Identity to, String longMessage) {
+//        Message ret = new Message();
+//        Vector<Identity> toList = new Vector<>();
+//        toList.add(to);
+//        ret.setTo(toList);
+//        ret.setFrom(from);
+////        ret.setShortmsg();
+//        ret.setLongmsg(longMessage);
+//        ret.setDir(Message.Direction.Outgoing);
+//        return ret;
+//    }
+
     public static Message generateSourceMessage(Identity from, Identity to, long id, long longMsgLen) {
         Message msg = new Message();
         Vector<Identity> vID = new Vector<Identity>();