diff --git a/smack-core/src/main/java/org/jivesoftware/smack/SmackException.java b/smack-core/src/main/java/org/jivesoftware/smack/SmackException.java
index 3a638bdbf..90d5432d7 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/SmackException.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/SmackException.java
@@ -54,7 +54,7 @@ public class SmackException extends Exception {
     }
 
     /**
-     * Exception thrown always when there was no response to an IQ request within the packet reply
+     * Exception thrown always when there was no response to an (IQ) request within the packet reply
      * timeout of the used connection instance.
      */
     public static class NoResponseException extends SmackException {
@@ -64,6 +64,7 @@ public class SmackException extends Exception {
         private static final long serialVersionUID = -6523363748984543636L;
 
         public NoResponseException() {
+            super("No response received within packet reply timeout");
         }
     }
 
@@ -75,6 +76,7 @@ public class SmackException extends Exception {
         private static final long serialVersionUID = 3216216839100019278L;
 
         public NotLoggedInException() {
+            super("Client is not logged in");
         }
     }
 
@@ -86,6 +88,7 @@ public class SmackException extends Exception {
         private static final long serialVersionUID = 5011416918049935231L;
 
         public AlreadyLoggedInException() {
+            super("Client is already logged in");
         }
     }
 
@@ -97,6 +100,7 @@ public class SmackException extends Exception {
         private static final long serialVersionUID = 5011416918049135231L;
 
         public AlreadyConnectedException() {
+            super("Client is already connected");
         }
     }
 
@@ -108,6 +112,7 @@ public class SmackException extends Exception {
         private static final long serialVersionUID = 9197980400776001173L;
 
         public NotConnectedException() {
+            super("Client is not, or no longer, connected");
         }
     }
 
@@ -122,21 +127,40 @@ public class SmackException extends Exception {
         }
     }
 
-    public static class SecurityRequiredException extends SmackException {
+    public static abstract class SecurityRequiredException extends SmackException {
 
         /**
          * 
          */
         private static final long serialVersionUID = 384291845029773545L;
 
-        public SecurityRequiredException() {
-        }
-
         public SecurityRequiredException(String message) {
             super(message);
         }
     }
 
+    public static class SecurityRequiredByClientException extends SecurityRequiredException {
+        /**
+         * 
+         */
+        private static final long serialVersionUID = 2395325821201543159L;
+
+        public SecurityRequiredByClientException() {
+            super("SSL/TLS required by client but not supported by server");
+        }
+    }
+
+    public static class SecurityRequiredByServerException extends SecurityRequiredException {
+        /**
+         * 
+         */
+        private static final long serialVersionUID = 8268148813117631819L;
+
+        public SecurityRequiredByServerException() {
+            super("SSL/TLS required by server but disabled in client");
+        }
+    }
+
     public static class SecurityNotPossibleException extends SmackException {
 
         /**
@@ -238,5 +262,8 @@ public class SmackException extends Exception {
          */
         private static final long serialVersionUID = 2346934138253437571L;
 
+        public ResourceBindingNotOfferedException() {
+            super("Resource binding was not offered by server");
+        }
     }
 }
diff --git a/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java b/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java
index b7e2afb66..42eecd238 100644
--- a/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java
+++ b/smack-tcp/src/main/java/org/jivesoftware/smack/tcp/XMPPTCPConnection.java
@@ -29,6 +29,8 @@ import org.jivesoftware.smack.SmackException.AlreadyLoggedInException;
 import org.jivesoftware.smack.SmackException.NoResponseException;
 import org.jivesoftware.smack.SmackException.NotConnectedException;
 import org.jivesoftware.smack.SmackException.ConnectionException;
+import org.jivesoftware.smack.SmackException.SecurityRequiredByClientException;
+import org.jivesoftware.smack.SmackException.SecurityRequiredByServerException;
 import org.jivesoftware.smack.SmackException.SecurityRequiredException;
 import org.jivesoftware.smack.SynchronizationPoint;
 import org.jivesoftware.smack.XMPPException.StreamErrorException;
@@ -922,8 +924,7 @@ public class XMPPTCPConnection extends AbstractXMPPConnection {
         StartTls startTlsFeature = getFeature(StartTls.ELEMENT, StartTls.NAMESPACE);
         if (startTlsFeature != null) {
             if (startTlsFeature.required() && config.getSecurityMode() == SecurityMode.disabled) {
-                notifyConnectionError(new SecurityRequiredException(
-                                "TLS required by server but not allowed by connection configuration"));
+                notifyConnectionError(new SecurityRequiredByServerException());
                 return;
             }
 
@@ -938,7 +939,7 @@ public class XMPPTCPConnection extends AbstractXMPPConnection {
         // and are secure, however (features get parsed a second time after TLS is established).
         if (!isSecureConnection() && startTlsFeature == null
                         && getConfiguration().getSecurityMode() == SecurityMode.required) {
-            throw new SecurityRequiredException();
+            throw new SecurityRequiredByClientException();
         }
 
         if (getSASLAuthentication().authenticationSuccessful()) {