Using Microsoft Outlook 2011 for signed and encrypted mail

To use Outlook for Mac 2011 to send and receive encrypted email, you must have a valid digital certificate. After you have downloaded and imported the appropriate intermediate certificates for your smart card, you can configure Microsoft Outlook 2011 to sign email with your certificate and send encrypted mail.

To send a digitally signed message:

  1. Log on the Mac and open Microsoft Outlook.
  2. On the Tools menu, click Accounts.
  3. Select the account from which you want to send a digitally signed message.
  4. Click Advanced, then click the Security tab.
  5. Under Digital signing, click the Certificate menu, then select the certificate that you want to use.
  6. Click Include my certificates in signed messages check box if all of your recipients have email that supports digital signing and encryption.
  7. Click OK, then close the Accounts dialog box.
  8. When composing email messages, click the Options tab, click Security, then click Digitally Sign Message.

To send an encrypted message:

  1. Log on the Mac and open Microsoft Outlook.
  2. On the Tools menu, click Accounts.
  3. Select the account from which you want to send an encrypted message.
  4. Click Advanced, then click the Security tab.
  5. Under Encryption, click the Certificate menu, then select the certificate that you want to use.
  6. Click OK, then close the Accounts dialog box.
  7. When composing email messages, click the Options tab, click Security, then click Encrypt Message.

To send an encrypted message, you must have the public certificate of the user to whom you are sending the mail message. If the recipient is a contact in your address book, this certificate is typically available on the Certificates tab in Outlook. If you do not have the certificate, Outlook will not create an encrypted mail message. However, if the name of the person matches a contact in your address book, Outlook encrypts the message before sending it.

For more information about managing digital certificates and sending and receiving encrypted email in Outlook for Mac 2011, see the Microsoft topic How users manage digital certificates in Outlook for Mac 2011..