Htc 8500 User Manual download pdf (Page 67)

messages to improve privacy and prevent undue tampering or hacking

of your messages. You can encrypt a message with or without a

certificate. However, to read an encrypted message, you need a valid

certificate to decrypt it.

Note S/MIME encryption and digital signatures for Windows Mobile-based

devices are available only with Exchange Server 2003 Service Pack

2 or a later version that supports S/MIME. If you are not using one

of these products, or have not yet synchronized, these options are

unavailable.

Digitally sign and encrypt all messages

ActiveSync allows you to set up S/MIME e-mail encryption and signing.

You must obtain a valid certificate to sign and encrypt e-mail messages

successfully.

1. Tap Start > Programs > ActiveSync.

2. Tap Menu > Options.

3. Select the E-mail information type, and tap Settings. On the E-

mail Sync Options screen, tap Advanced.

4. Do one or both of the following:

• To sign all your outgoing e-mail messages so that recipients

can be certain that the messages were sent by you and have

not been altered in any way, select the Sign all outgoing e-

mail messages check box.

Synchronizing Information and Setting Up E-mail Security 67

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Htc 8500 User Manual Page 67