To create a directory service account with Outlook Express:
- On the Tools menu, click Accounts.
- Click Add, and then click Directory Service.
- Type the name of an available GC server.
- On the same page, choose whether you want to use this directory to check e-mail addresses for outgoing messages.
- Click Accounts on the Tools menu, click Directory Service, click the account that you created, and then click Properties.
- On the Advanced tab, type 3268 for the port number.
- For the search base field, type NULL.
- On the General tab, verify that the account has the proper rights.