CDO.Message msg = new CDO.Message();

        string passWord="passWord";

        string from = "my@domain.com";

        string server = "192.168.0.0";


         msg.From = from;
         msg.To = from;
         msg.Subject = "test mail";
         msg.TextBody = "test.";

 

         CDO.IConfiguration iConfig = msg.Configuration;

         ADODB.Fields fields = iConfig.Fields;

 

         fields["http://schemas.microsoft.com/cdo/configuration/sendusing"].Value = 2;

         fields["http://schemas.microsoft.com/cdo/configuration/sendemailaddress"].Value = from;

         fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"].Value = passWord;

         fields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"].Value = 1;

         fields["http://schemas.microsoft.com/cdo/configuration/smtpserver"].Value = server;

 

         fields.Update();

 

        try

        {

             msg.Send();

             msg = null;

         }

        catch (Exception ex)

        {

            throw;

         }