Get a digital ID

A digital ID enables you to send cryptographic e-mail messages for more secure communication using Microsoft Office Outlook 2007. You can send digitally signed messages to prove your identity and prevent message tampering. You can also encrypt messages to keep your messages private. But first, you must obtain a digital ID from a reliable source.

In this article


Get a digital ID for sending messages over the Internet

Get a digital ID from a certifying authority

  1. On the Tools menu, click Trust Center, and then click E-mail Security.
  2. Under Digital IDs (Certificates), click Get a Digital ID.
  3. Click Get an S/MIME certificate from an external Certification Authority, and then click OK.

Outlook starts your Web browser and opens a Web page on the Microsoft Office Online Web site that lists several certification authorities. Click the one that you want to use and follow the instructions on the Web page to register for a digital ID. The certification authority will then send you a digital ID and instructions via e-mail. You can alsolook here to find other sources of digital certificates.

Specify the digital ID to use

  1. On the Tools menu, click Trust Center, and then click E-mail Security.
  2. Under Encrypted e-mail, click Settings.

 Note   If you have a digital ID, the settings to use the digital ID are automatically configured for you. If you want to use a different digital ID, specify the digital ID by following the remaining steps in this procedure.

  1. At the bottom of the Security Setting Preferences section, click New.
  2. In the Security Settings Name box, enter a name.
  3. In the Cryptography Format list, click S/MIME. Depending on your certificate type, you can choose Exchange Security instead.
  4. Next to the Signing Certificate box, click Choose, and then select a certificate that is valid for digital signing.

 Note   To learn if the certificate is intended for digital signing and encryption, on the Select Certificate dialog box, click View Certificate. An appropriate certificate for cryptographic messaging (such as digital signing) might say, for example, "Protects e-mail messages."

  1. Next to the Encryption Certificate box, click Choose, and then select a certificate that is valid for encryption.
  2. Select the Send these certificates with signed messages check box unless you will be sending and receiving signed messages only within your organization.

 Note   The settings that you choose become the default whenever you send cryptographic messages. If you do not want these settings to be used by default for all your cryptographic messages, clear the Default Security Setting for all cryptographic messages check box.

Add a recipient's certificate to your Contacts

  1. Open a message that has been digitally signed.
  2. Right-click the name in the From box, and then click Add to Outlook Contacts on the shortcut menu.
  3. If you already have an entry for this person, in the Duplicate Contact Detected dialog box, select Update information of selected Contact. A backup copy will be saved in Deleted Items Folder.

The certificate is now stored with your contact entry for this recipient. You can now send encrypted e-mail messages to this person.

To view the certificate for a contact, double-click the person's name, and then click the Certificates tab.

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Get a digital ID for sending messages using Microsoft Exchange

This feature requires you to use a Microsoft Exchange Server 2000, Exchange Server 2003, or Exchange Server 2007 account. Most home and personal accounts do not use Microsoft Exchange.

To get an Exchange digital ID — for example, through Key Management Service — your Exchange administrator must have security running on the server and must give you a special password, called a token. Your Exchange will then send you a message verifying your token. For more information, see your Exchange administrator.

  1. On the Tools menu, click Trust Center, and then click E-mail Security.
  2. Under Digital IDs (Certificates), click Get a Digital ID.
  3. Click Set up Security for me on the Exchange.
  4. Click OK.
  5. In the Digital ID Name box, type your name.
  6. In the Token box, type the special password that your Exchange administrator assigned to you.
  7. In the Microsoft Office Outlook Security Password dialog box, type a different password for the digital ID, and then type the password again in the Confirm box.

You will receive a message in your Inbox from your Exchange administrator that will require you to enter the password you created in this step.

  1. In the dialog box that appears, enter your password, click the Remember password for check box, and then enter the number of minutes for which you want Outlook to remember your password.
  2. In the Root Certificate Store message that appears, click Yes.

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Applies to:
Outlook 2007