HTC NM8LIBR100 user manual To digitally sign and encrypt all messages

66 Working with Company E-mails and Meeting Appointments

To view the details of the certificate in the message, click Menu > View Certificate.

Note There can be several reasons why a digital signature is not valid. For example, the sender’s certificate may have expired, it may have been revoked by the certificate authority, or the server that verifies the certificate is unavailable. Contact the sender to report the problem.

To digitally sign and encrypt all messages

You can set up ActiveSync to digitally sign and encrypt all outgoing messages. You must obtain a valid certificate to sign and encrypt e-mail messages successfully.

1.Click Start > ActiveSync.

2.Click Menu > Options.

3.Select the E-mailinformation type, and click Settings. On the E-mail Sync Options screen, click Menu > Advanced.

4.Select Encrypt messages to protect your e-mails from being viewed except by the intended recipients. Select Sign messages so that recipients are certain that e-mails are sent by you and have not been altered.

5.Click Menu > Choose Certificate to select a certificate for signing or encrypting outgoing e-mail messages.