High Tech Computer Pocket PC Phone, Руководство пользователя

Страница: 123 / 208

Exchanging Messages and Using Outlook 123
Set up e-mail security
Windows Mobile on your device protects your Outlook e-mails through
Secure/Multipurpose Internet Mail Extension (S/MIME), which allows you to
digitally sign your messages as well as encrypt them.
Using authorisation keys and certificates, S/MIME allows you to digitally sign
your e-mail messages to prove your identity to the recipients. Authorisation
keys are also used when encrypting 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 synchronised, these options are unavailable.
To 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.
• To encrypt all your outgoing e-mail messages so that the
contents of your messages are protected from being viewed by
anyone other than the intended recipients, select the
Encrypt all
outgoing e-mail messages check box.
5.
Tap
Choose Certificate
to select a certificate for signing or
encrypting outgoing e-mail messages.