diff --git a/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Client/OrganizationProxy.cs b/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Client/OrganizationProxy.cs
index 9fd434df..576ff692 100644
--- a/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Client/OrganizationProxy.cs
+++ b/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Client/OrganizationProxy.cs
@@ -99,6 +99,8 @@ namespace WebsitePanel.EnterpriseServer.HostedSolution {
         
         private System.Threading.SendOrPostCallback GetOrganizationObjectsByDomainOperationCompleted;
         
+        private System.Threading.SendOrPostCallback CheckDomainUsedByHostedOrganizationOperationCompleted;
+        
         private System.Threading.SendOrPostCallback CreateUserOperationCompleted;
         
         private System.Threading.SendOrPostCallback ImportUserOperationCompleted;
@@ -214,6 +216,9 @@ namespace WebsitePanel.EnterpriseServer.HostedSolution {
         /// <remarks/>
         public event GetOrganizationObjectsByDomainCompletedEventHandler GetOrganizationObjectsByDomainCompleted;
         
+        /// <remarks/>
+        public event CheckDomainUsedByHostedOrganizationCompletedEventHandler CheckDomainUsedByHostedOrganizationCompleted;
+        
         /// <remarks/>
         public event CreateUserCompletedEventHandler CreateUserCompleted;
         
@@ -1112,6 +1117,50 @@ namespace WebsitePanel.EnterpriseServer.HostedSolution {
             }
         }
         
+        /// <remarks/>
+        [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/CheckDomainUsedByHostedOrganization", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
+        public bool CheckDomainUsedByHostedOrganization(int itemId, int domainId) {
+            object[] results = this.Invoke("CheckDomainUsedByHostedOrganization", new object[] {
+                        itemId,
+                        domainId});
+            return ((bool)(results[0]));
+        }
+        
+        /// <remarks/>
+        public System.IAsyncResult BeginCheckDomainUsedByHostedOrganization(int itemId, int domainId, System.AsyncCallback callback, object asyncState) {
+            return this.BeginInvoke("CheckDomainUsedByHostedOrganization", new object[] {
+                        itemId,
+                        domainId}, callback, asyncState);
+        }
+        
+        /// <remarks/>
+        public bool EndCheckDomainUsedByHostedOrganization(System.IAsyncResult asyncResult) {
+            object[] results = this.EndInvoke(asyncResult);
+            return ((bool)(results[0]));
+        }
+        
+        /// <remarks/>
+        public void CheckDomainUsedByHostedOrganizationAsync(int itemId, int domainId) {
+            this.CheckDomainUsedByHostedOrganizationAsync(itemId, domainId, null);
+        }
+        
+        /// <remarks/>
+        public void CheckDomainUsedByHostedOrganizationAsync(int itemId, int domainId, object userState) {
+            if ((this.CheckDomainUsedByHostedOrganizationOperationCompleted == null)) {
+                this.CheckDomainUsedByHostedOrganizationOperationCompleted = new System.Threading.SendOrPostCallback(this.OnCheckDomainUsedByHostedOrganizationOperationCompleted);
+            }
+            this.InvokeAsync("CheckDomainUsedByHostedOrganization", new object[] {
+                        itemId,
+                        domainId}, this.CheckDomainUsedByHostedOrganizationOperationCompleted, userState);
+        }
+        
+        private void OnCheckDomainUsedByHostedOrganizationOperationCompleted(object arg) {
+            if ((this.CheckDomainUsedByHostedOrganizationCompleted != null)) {
+                System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
+                this.CheckDomainUsedByHostedOrganizationCompleted(this, new CheckDomainUsedByHostedOrganizationCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
+            }
+        }
+        
         /// <remarks/>
         [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/CreateUser", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
         public int CreateUser(int itemId, string displayName, string name, string domain, string password, string subscriberNumber, bool sendNotification, string to) {
@@ -3085,6 +3134,32 @@ namespace WebsitePanel.EnterpriseServer.HostedSolution {
         }
     }
     
+    /// <remarks/>
+    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "2.0.50727.42")]
+    public delegate void CheckDomainUsedByHostedOrganizationCompletedEventHandler(object sender, CheckDomainUsedByHostedOrganizationCompletedEventArgs e);
+    
+    /// <remarks/>
+    [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "2.0.50727.42")]
+    [System.Diagnostics.DebuggerStepThroughAttribute()]
+    [System.ComponentModel.DesignerCategoryAttribute("code")]
+    public partial class CheckDomainUsedByHostedOrganizationCompletedEventArgs : System.ComponentModel.AsyncCompletedEventArgs {
+        
+        private object[] results;
+        
+        internal CheckDomainUsedByHostedOrganizationCompletedEventArgs(object[] results, System.Exception exception, bool cancelled, object userState) : 
+                base(exception, cancelled, userState) {
+            this.results = results;
+        }
+        
+        /// <remarks/>
+        public bool Result {
+            get {
+                this.RaiseExceptionIfNecessary();
+                return ((bool)(this.results[0]));
+            }
+        }
+    }
+    
     /// <remarks/>
     [System.CodeDom.Compiler.GeneratedCodeAttribute("wsdl", "2.0.50727.42")]
     public delegate void CreateUserCompletedEventHandler(object sender, CreateUserCompletedEventArgs e);
diff --git a/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Code/HostedSolution/OrganizationController.cs b/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Code/HostedSolution/OrganizationController.cs
index cc4ed6b0..dcd1d063 100644
--- a/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Code/HostedSolution/OrganizationController.cs
+++ b/WebsitePanel/Sources/WebsitePanel.EnterpriseServer.Code/HostedSolution/OrganizationController.cs
@@ -507,6 +507,15 @@ namespace WebsitePanel.EnterpriseServer
             }
         }
 
+        public static bool CheckDomainUsedByHostedOrganization(int itemId, int domainId)
+        {
+            DomainInfo domain = ServerController.GetDomain(domainId);
+            if (domain == null)
+                return false;
+
+            return (DataProvider.CheckDomainUsedByHostedOrganization(domain.DomainName) == 1);
+        }
+
         private static void DeleteOCSUsers(int itemId, ref bool successful)
         {
             try
diff --git a/WebsitePanel/Sources/WebsitePanel.EnterpriseServer/esOrganizations.asmx.cs b/WebsitePanel/Sources/WebsitePanel.EnterpriseServer/esOrganizations.asmx.cs
index b29e8618..d40c3099 100644
--- a/WebsitePanel/Sources/WebsitePanel.EnterpriseServer/esOrganizations.asmx.cs
+++ b/WebsitePanel/Sources/WebsitePanel.EnterpriseServer/esOrganizations.asmx.cs
@@ -164,6 +164,11 @@ namespace WebsitePanel.EnterpriseServer
             return OrganizationController.GetOrganizationObjectsByDomain(itemId, domainName);
         }
 
+        [WebMethod]
+        public bool CheckDomainUsedByHostedOrganization(int itemId, int domainId)
+        {
+            return OrganizationController.CheckDomainUsedByHostedOrganization(itemId, domainId);
+        }
 
         #endregion
 
diff --git a/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx b/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx
index 71b7c337..bf8ac468 100644
--- a/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx
+++ b/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx
@@ -59,8 +59,12 @@
 						    <asp:TemplateField>
 							    <ItemTemplate>
 									&nbsp;<asp:ImageButton ID="imgDelDomain" runat="server" Text="Delete" SkinID="ExchangeDelete"
-									    CommandName="DeleteItem" CommandArgument='<%# Eval("DomainId") %>' Visible='<%# !((bool)Eval("IsDefault")) %>'
-									    meta:resourcekey="cmdDelete" OnClientClick="return confirm('Are you sure you want to delete selected domain?')"></asp:ImageButton>
+									    CommandName="DeleteItem" CommandArgument='<%# Eval("DomainId") %>' Visible='<%# ((!(bool)Eval("IsDefault"))) && (!CheckDomainUsedByHostedOrganization(Eval("DomainID").ToString())) %>'
+									    meta:resourcekey="cmdDelete" OnClientClick="return confirm('Are you sure you want to delete selected domain?')"
+                                        />
+                                    &nbsp;<asp:LinkButton ID="lnkViewUsage" runat="server" Text="View Usage" Visible='<%# CheckDomainUsedByHostedOrganization(Eval("DomainID").ToString()) %>'
+                                        CommandName="ViewUsage" CommandArgument='<%# Eval("DomainId") %>'
+                                         />
 							    </ItemTemplate>
 						    </asp:TemplateField>
 					    </Columns>
diff --git a/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx.cs b/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx.cs
index 3c958d60..38758d6f 100644
--- a/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx.cs
+++ b/WebsitePanel/Sources/WebsitePanel.WebPortal/DesktopModules/WebsitePanel/ExchangeServer/ExchangeDomainNames.ascx.cs
@@ -65,6 +65,14 @@ namespace WebsitePanel.Portal.ExchangeServer
                     "ItemID=" + PanelRequest.ItemID);
         }
 
+        public bool CheckDomainUsedByHostedOrganization(string domainId)
+        {
+            int id;
+            if (!int.TryParse(domainId, out id)) return false;
+
+            return ES.Services.Organizations.CheckDomainUsedByHostedOrganization(PanelRequest.ItemID, id);
+        }
+
         private void BindDomainNames()
         {
             OrganizationDomainName[] list = ES.Services.Organizations.GetOrganizationDomains(PanelRequest.ItemID);
@@ -149,6 +157,14 @@ namespace WebsitePanel.Portal.ExchangeServer
                     ShowErrorMessage("EXCHANGE_CHANGE_DOMAIN", ex);
                 }
             }
+            if (e.CommandName == "ViewUsage")
+            {
+                int domainId = Utils.ParseInt(e.CommandArgument.ToString(), 0);
+                Response.Redirect(EditUrl("ItemID", PanelRequest.ItemID.ToString(), "check_domain",
+                    "SpaceID=" + PanelSecurity.PackageId, "DomainID=" + domainId));
+                return;
+            }
+
         }
 
         protected void btnSetDefaultDomain_Click(object sender, EventArgs e)