diff --git a/src/main/java/altk/comm/engine/Postback.java b/src/main/java/altk/comm/engine/Postback.java
index dbc09be..1193bea 100644
--- a/src/main/java/altk/comm/engine/Postback.java
+++ b/src/main/java/altk/comm/engine/Postback.java
@@ -59,12 +59,13 @@ import altk.comm.engine.Broadcast.PostbackThreadActionOnEmpty;
  */
 public class Postback
 {
-    private static final String XML_VERSION_1_0_ENCODING_UTF_8 = "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+	private static final String XML_VERSION_1_0_ENCODING_UTF_8 = "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
     
     private static final int QUEUE_WAIT = 300; // seconds
     private static final int POSTBACK_SERVER_WAIT_TIME = 10; // seconds
 
-	private static final int RETRIES_DEFAULT = 3;
+	private static final int RETRIES_DEFAULT = 5;
+    private static final int RETRY_SLEEP_SECONDS = 5;
     
     private final String postBackURL;
     private final String xmlTopElement;
@@ -134,6 +135,8 @@ public class Postback
                     switch (post(reportList))
                     {
                         case IRRECOVERABLE_ERROR:
+                        	// YML: should abort broadcfast to contain damage.
+                        	break;
                         case SUCCESS:
                             break;
                             
@@ -349,6 +352,17 @@ public class Postback
                     HttpContext context)
             {
                 if (executionCount >= maxRetries) return false;
+                if (executionCount > 1)
+                {
+                	try
+                	{
+                		Thread.sleep(RETRY_SLEEP_SECONDS * 1000);
+                	}
+                	catch (InterruptedException ex)
+                	{
+                		// ignore
+                	}
+                }
                 return true;
             }
         };