Blackberry 8900 User Guide - Page 66
S/MIME-protected message troubleshooting, Security Options, S/MIME, Request S/MIME Receipts
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User Guide S/MIME-protected messages Change the encryption algorithms for S/MIME-protected messages If a message has multiple recipients, your BlackBerry® device uses the first selected encryption algorithm in the list that all recipients are known to support. 1. In the device options, click Security Options. 2. Click S/MIME. 3. Select the check box beside one or more encryption algorithms. 4. Press the Menu key. 5. Click Save. Request delivery notification for signed S/MIME-protected messages 1. In the device options, click Security Options. 2. Click S/MIME. 3. Change the Request S/MIME Receipts field to Yes. 4. Press the Menu key. 5. Click Save. Turn off the prompt that appears before an S/MIME-protected message is truncated 1. In the device options, click Security Options. 2. Click S/MIME. 3. Change the Warn about truncated messages field to No. 4. Press the Menu key. 5. Click Save. To turn on the prompt again, change the Warn about truncated messages field to Yes. Turn off the prompt that appears when you use an S/MIME certificate that is not recommended for use 1. In the device options, click Security Options. 2. Click S/MIME. 3. Change the Warn about problems with my certificates field to No. 4. Press the Menu key. 5. Click Save. To turn on the prompt again, change the Warn about problems with my certificates field to Yes. S/MIME-protected message troubleshooting Some signing and encryption options are not available on my device Try performing the following actions: • Verify that the email account that you are using supports all signing and encryption options. 64