HTC TRIN100 Bedienungsanleitung PDF herunterladen (Seite 161)

161

Using Outlook with Exchange Server

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the sender’s certificate may have expired, it may have been revoked by the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. 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:

• T

o 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.

• T

o 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.

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HTC TRIN100 Bedienungsanleitung Seite 161