Problem on Opening OutLook Express using ASP.NET

[sivisr]

Hi,
i am using the following code to open outlook Express to send mail ,but i get

" System.UnauthorizedAccessException: Access is denied. at WebApplication7.WebForm9.Button1_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\webapplication7\outlookfrm.aspx .cs:line 57 " this error.

My code:
Outlook._Application app = null;
Outlook._NameSpace nameSpace = null;
Outlook.MailItem memo = null;
Outlook.MAPIFolder outbox = null;
try
{
app = new Outlook.ApplicationClass();
nameSpace = app.GetNamespace("MAPI");
nameSpace.Logon(null,null,false, false);
outbox = nameSpace.GetDefaultFolder(Outlook.OlDefaultFolder s.olFolderDrafts);
memo = (Outlook.MailItem)app.CreateItem(Outlook.OlItemTyp e.olMailItem);
memo.To = "[e-mail]";
memo.Subject = "TechRepublic.com Test";
memo.Body = "Hello there";
memo.SaveSentMessageFolder = outbox;
memo.Send();
}
catch(System.Exception ex)
{
Response.Write(ex.ToString());
}

Any Body Please give me any suggesion or any other option for opening outlook.

[radcaesar]

In Which account you are running your application ? An account with admin rights ?

Means, did you make Impersonate to TRUE in web.config file and with a valid Domain Username and Password ?

[sivisr]

ya every thing is good but there is a problem in out look,its is not opening in my system.

thank you