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Synchronizing Information and Setting Up E-mail Security 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.
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