diff --git a/core/src/main/java/fixio/handlers/CompositeFixApplicationAdapter.java b/core/src/main/java/fixio/handlers/CompositeFixApplicationAdapter.java
index 65c4216..e02f025 100644
--- a/core/src/main/java/fixio/handlers/CompositeFixApplicationAdapter.java
+++ b/core/src/main/java/fixio/handlers/CompositeFixApplicationAdapter.java
@@ -17,6 +17,7 @@
 
 import fixio.fixprotocol.FixMessage;
 import fixio.fixprotocol.FixMessageBuilder;
+import fixio.validator.BusinessRejectException;
 import fixio.validator.FixMessageValidator;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
@@ -41,16 +42,14 @@ public CompositeFixApplicationAdapter(List<FixMessageValidator> validators, List
     }
 
     @Override
-    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws Exception {
+    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws BusinessRejectException {
         assert (msg != null) : "Message can't be null";
         LOGGER.info("Received : {}", msg);
 
         //Validate
-        if (validators != null) {
             for (FixMessageValidator validator : validators) {
                 validator.validate(ctx, msg);
             }
-        }
 
         //Business handler
         if (handlers != null) {
@@ -71,7 +70,7 @@ public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> ou
     }
 
     @Override
-    public void beforeSendMessage(ChannelHandlerContext ctx, FixMessageBuilder msg) throws Exception {
+    public void beforeSendMessage(ChannelHandlerContext ctx, FixMessageBuilder msg) {
         for (FixMessageHandler handler : handlers) {
             handler.beforeSendMessage(ctx, msg);
         }
diff --git a/core/src/main/java/fixio/handlers/FixApplication.java b/core/src/main/java/fixio/handlers/FixApplication.java
index 0701a5e..d98251a 100644
--- a/core/src/main/java/fixio/handlers/FixApplication.java
+++ b/core/src/main/java/fixio/handlers/FixApplication.java
@@ -19,6 +19,7 @@
 import fixio.events.LogoutEvent;
 import fixio.fixprotocol.FixMessage;
 import fixio.fixprotocol.FixMessageBuilder;
+import fixio.validator.BusinessRejectException;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
 
@@ -48,14 +49,17 @@ public interface FixApplication extends ChannelHandler {
      * @param ctx current {@link ChannelHandlerContext}
      * @param msg a {@link FixMessage} to handle
      * @param out a {@link List} where decoded messages should be added
-     *
+     * @throws BusinessRejectException when message can't be accepted
+     * @throws InterruptedException    if interrupted while processing a message
      */
-    void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws Exception;
+    void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out)
+            throws BusinessRejectException, InterruptedException;
 
     /**
      * Invoked before {@link FixMessageBuilder} is sent.
      *
-     * @param ctx current {@link ChannelHandlerContext}
+     * @param ctx            current {@link ChannelHandlerContext}
+     * @param messageBuilder a message builder
      */
-    void beforeSendMessage(ChannelHandlerContext ctx, FixMessageBuilder messageBuilder) throws Exception;
+    void beforeSendMessage(ChannelHandlerContext ctx, FixMessageBuilder messageBuilder);
 }
diff --git a/core/src/main/java/fixio/handlers/FixApplicationAdapter.java b/core/src/main/java/fixio/handlers/FixApplicationAdapter.java
index 4f1835a..609c39e 100644
--- a/core/src/main/java/fixio/handlers/FixApplicationAdapter.java
+++ b/core/src/main/java/fixio/handlers/FixApplicationAdapter.java
@@ -19,6 +19,7 @@
 import fixio.events.LogoutEvent;
 import fixio.fixprotocol.FixMessage;
 import fixio.fixprotocol.FixMessageBuilder;
+import fixio.validator.BusinessRejectException;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.MessageToMessageDecoder;
@@ -57,16 +58,21 @@ public void onLogout(ChannelHandlerContext ctx, LogoutEvent msg) {
     }
 
     @Override
-    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws Exception {
+    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws BusinessRejectException, InterruptedException {
     }
 
     @Override
-    public void beforeSendMessage(ChannelHandlerContext ctx, FixMessageBuilder msg) throws Exception {
+    public void beforeSendMessage(ChannelHandlerContext ctx, FixMessageBuilder msg) {
     }
 
     @Override
-    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)  {
         LOGGER.error("Uncaught application exception.", cause);
-        ctx.close().sync();
+        try {
+            ctx.close().sync();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new RuntimeException("Interrupted while closing channel", e);
+        }
     }
 }
diff --git a/core/src/test/java/fixio/FixConversationIT.java b/core/src/test/java/fixio/FixConversationIT.java
index 84a1391..0c6181a 100644
--- a/core/src/test/java/fixio/FixConversationIT.java
+++ b/core/src/test/java/fixio/FixConversationIT.java
@@ -113,7 +113,7 @@ public void testBusinessMessage() throws InterruptedException {
     private static class ServerLogicHandler extends FixApplicationAdapter {
 
         @Override
-        public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws Exception {
+        public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) {
             if (MessageTypes.USER_REQUEST.equals(msg.getMessageType())) {
                 conversation.add(msg);
                 ctx.writeAndFlush(createUserStatusReport());
diff --git a/examples/pom.xml b/examples/pom.xml
index a1764fc..4487fd5 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -25,7 +25,7 @@
     <artifactId>examples</artifactId>
 
     <properties>
-        <quickfix.version>1.5.3</quickfix.version>
+        <quickfix.version>1.6.3</quickfix.version>
     </properties>
 
     <dependencies>
@@ -44,33 +44,23 @@
         </dependency>
 
         <dependency>
-            <groupId>quickfixj</groupId>
+            <groupId>org.quickfixj</groupId>
             <artifactId>quickfixj-all</artifactId>
             <version>${quickfix.version}</version>
         </dependency>
         <dependency>
-            <groupId>quickfixj</groupId>
-            <artifactId>quickfixj-msg-fix44</artifactId>
+            <groupId>org.quickfixj</groupId>
+            <artifactId>quickfixj-messages-fix44</artifactId>
             <version>${quickfix.version}</version>
         </dependency>
 
-        <dependency>
-            <groupId>org.apache.mina</groupId>
-            <artifactId>mina-core</artifactId>
-            <version>1.1.0</version>
-            <scope>runtime</scope>
-        </dependency>
+        <!--<dependency>-->
+            <!--<groupId>org.apache.mina</groupId>-->
+            <!--<artifactId>mina-core</artifactId>-->
+            <!--<version>1.1.0</version>-->
+            <!--<scope>runtime</scope>-->
+        <!--</dependency>-->
 
     </dependencies>
 
-    <repositories>
-        <repository>
-            <id>MarketceteraRepo</id>
-            <url>http://repo.marketcetera.org/maven</url>
-            <releases>
-                <enabled>true</enabled>
-            </releases>
-        </repository>
-    </repositories>
-
 </project>
\ No newline at end of file
diff --git a/examples/src/main/java/fixio/examples/priceclient/PriceReadingApp.java b/examples/src/main/java/fixio/examples/priceclient/PriceReadingApp.java
index 79536a0..0e5c64a 100644
--- a/examples/src/main/java/fixio/examples/priceclient/PriceReadingApp.java
+++ b/examples/src/main/java/fixio/examples/priceclient/PriceReadingApp.java
@@ -16,7 +16,12 @@
 package fixio.examples.priceclient;
 
 import fixio.events.LogonEvent;
-import fixio.fixprotocol.*;
+import fixio.fixprotocol.FieldType;
+import fixio.fixprotocol.FixMessage;
+import fixio.fixprotocol.FixMessageBuilder;
+import fixio.fixprotocol.FixMessageBuilderImpl;
+import fixio.fixprotocol.Group;
+import fixio.fixprotocol.MessageTypes;
 import fixio.handlers.FixApplicationAdapter;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
@@ -41,7 +46,7 @@ public void onLogon(ChannelHandlerContext ctx, LogonEvent msg) {
     }
 
     @Override
-    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws Exception {
+    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) {
         assert (msg != null) : "Message can't be null";
         switch (msg.getMessageType()) {
             case MessageTypes.QUOTE:
diff --git a/examples/src/main/java/fixio/examples/priceserver/PriceStreamingApp.java b/examples/src/main/java/fixio/examples/priceserver/PriceStreamingApp.java
index 5bf6599..77d22e0 100644
--- a/examples/src/main/java/fixio/examples/priceserver/PriceStreamingApp.java
+++ b/examples/src/main/java/fixio/examples/priceserver/PriceStreamingApp.java
@@ -64,7 +64,7 @@ public void onLogout(ChannelHandlerContext ctx, LogoutEvent msg) {
     }
 
     @Override
-    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
         stopStreaming(ctx);
         super.exceptionCaught(ctx, cause);
     }
@@ -77,7 +77,7 @@ private void stopStreaming(ChannelHandlerContext ctx) {
     }
 
     @Override
-    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) throws Exception {
+    public void onMessage(ChannelHandlerContext ctx, FixMessage msg, List<Object> out) {
         String reqId;
         final String messageType = msg.getMessageType();
         switch (messageType) {