using System;
using CDOEXM;
using System.DirectoryServices;

namespace MBTest
{
     class Class1
     {
          [STAThread]
          static void Main(string[] args)
          {
               //TODO: Change these items to values for your domain or organization.
               string defaultNC = "DC=yourdomain,DC=com";
               string alias = "jsmith";
               string fullName = "Joseph Smith";
               string password = "TestMb123.";
               string domainName = "yourdomain.com";
               string homeMDB = "CN=Mailbox Store (Your Server),CN=Your Storage Group,"
                         + "CN=InformationStore,CN=Your Server,CN=Servers,"
                         + "CN=Your Administrative Group,CN=Administrative Groups,"
                         + "CN=Your Org,CN=Microsoft Exchange,CN=Services,"
                         + "CN=Configuration,DC=Yourdomain,DC=Com";

               DirectoryEntry container, user;
               CDOEXM.IMailboxStore mailbox;

               //This creates the new user in the "users" container.
               //Set the sAMAccountName and the password
               container = new DirectoryEntry("LDAP://cn=users," + defaultNC);
               user = container.Children.Add("cn=" + fullName, "user");
               user.Properties["sAMAccountName"].Add(alias);
               user.CommitChanges();
               user.Invoke("SetPassword", new object[]{password});

               //This enables the new user:
               user.Properties["userAccountControl"].Value = 0x200; //ADS_UF_NORMAL_ACCOUNT
               user.CommitChanges();

               //Obtain the IMailboxStore interface, create the mailbox, and commit the changes
               mailbox = (IMailboxStore)user.NativeObject;
               mailbox.CreateMailbox(homeMDB);
               user.CommitChanges();

               return;
          }
     }
}