diff --git a/config/alfresco/subsystems/ActivitiesFeed/default/activities-feed-context.xml b/config/alfresco/subsystems/ActivitiesFeed/default/activities-feed-context.xml
index b0ac971f29..8d5e506f65 100644
--- a/config/alfresco/subsystems/ActivitiesFeed/default/activities-feed-context.xml
+++ b/config/alfresco/subsystems/ActivitiesFeed/default/activities-feed-context.xml
@@ -10,6 +10,7 @@
       <property name="tenantService" ref="tenantService"/>
       <property name="userNamesAreCaseSensitive" value="${user.name.caseSensitive}"/>
       <property name="eventPublisher" ref="eventPublisher" />
+      <property name="ignoredActivityTypes" value="${activities.post.ignored-types}"/>
    </bean>
    
    <bean id="activityService" class="org.alfresco.repo.activities.ActivityServiceImpl">
diff --git a/source/java/org/alfresco/repo/activities/ActivityPostServiceImpl.java b/source/java/org/alfresco/repo/activities/ActivityPostServiceImpl.java
index 8b34e0f20f..fecf88e98a 100644
--- a/source/java/org/alfresco/repo/activities/ActivityPostServiceImpl.java
+++ b/source/java/org/alfresco/repo/activities/ActivityPostServiceImpl.java
@@ -19,7 +19,10 @@
 package org.alfresco.repo.activities;
 
 import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Date;
+import java.util.List;
 
 import org.alfresco.error.AlfrescoRuntimeException;
 import org.alfresco.events.types.ActivityEvent;
@@ -61,7 +64,17 @@ public class ActivityPostServiceImpl implements ActivityPostService
     private int estGridSize = 1;
     
     private boolean userNamesAreCaseSensitive = false;
-    
+
+    public void setIgnoredActivityTypes(String ignoredActivityTypes) 
+    {
+        if (ignoredActivityTypes!= null && ignoredActivityTypes.length() > 0)
+        {
+            this.ignoredActivityTypes = Arrays.asList(ignoredActivityTypes.split(","));
+        }
+    }
+
+    private List<String> ignoredActivityTypes = new ArrayList<>();
+
     public void setUserNamesAreCaseSensitive(boolean userNamesAreCaseSensitive)
     {
         this.userNamesAreCaseSensitive = userNamesAreCaseSensitive;
@@ -199,6 +212,13 @@ public class ActivityPostServiceImpl implements ActivityPostService
             {
                 throw new IllegalArgumentException("Invalid activity type - exceeds " + ActivityPostDAO.MAX_LEN_ACTIVITY_TYPE + " chars: " + activityType);
             }
+
+            if (ignoredActivityTypes != null && ignoredActivityTypes.contains(activityType))
+            {
+                // do not log the activity for ignored activity types.
+                logger.debug("Ignoring activity type for posting: " + activityType);
+                return;
+            }
             
             // optional - default to empty string
             if (activityData == null)
@@ -371,13 +391,13 @@ public class ActivityPostServiceImpl implements ActivityPostService
     }
     
     /**
-     * Validate that the nodeRef property - if present in the activity data - is valid
-     * on a basic level (it can be used to construct a NodeRef object).
-     * 
-     * @param jo
-     * @throws JSONException 
-     */
-    private NodeRef checkNodeRef(JSONObject jo) throws JSONException
+     * Validate that the nodeRef property - if present in the activity data - is valid
+     * on a basic level (it can be used to construct a NodeRef object).
+     * 
+     * @param jo
+     * @throws JSONException 
+     */
+    private NodeRef checkNodeRef(JSONObject jo) throws JSONException
     {
         String nodeRefStr = null;
         try
diff --git a/source/test-java/org/alfresco/repo/activities/ActivityServiceImplTest.java b/source/test-java/org/alfresco/repo/activities/ActivityServiceImplTest.java
index 2388e127bd..49c14b6e72 100644
--- a/source/test-java/org/alfresco/repo/activities/ActivityServiceImplTest.java
+++ b/source/test-java/org/alfresco/repo/activities/ActivityServiceImplTest.java
@@ -100,7 +100,10 @@ public class ActivityServiceImplTest extends TestCase
         activityService.postActivity("org.alfresco.testActivityType2", "", "", "");
         
         activityService.postActivity("org.alfresco.testActivityType3", "site1", "appToolA", "{ \"var1\" : \"val1\" }");
-    }
+
+         // ignore posting this type even though its valid
+        activityService.postActivity("file-previewed", "site1", "appToolA", "{ \"var1\" : \"val1\" }");
+    }   
     
     public void testPostInvalidActivities() throws Exception
     {