1.In the device options, click Security Options.
2.Click S/MIME.
3.In the Signing Options section or the Encryption Options section, change the Certificate field.
4.Press the Menu key.
5.Click Save.
Change the default signing and encryption option
Your BlackBerry® device is designed to use the default signing and encryption option when you send a message to a contact that you have not sent a message to or received a message from previously. If you have sent a message to or received message from the contact previously, your device tries to use the signing and encryption option that was used for the last message.
1.In the device options, click Advanced Options.
2.Click Default Services.
3.Change the Default Encoding field.
4.Press the Menu key.
5.Click Save.
About message classifications
If your BlackBerry® device is associated with an email account that uses a BlackBerry® Enterprise Server that supports this feature and your administrator turns on message classifications, the BlackBerry Enterprise Server applies a minimum set of security actions to each message that you compose, forward, or reply to, based on the classification that you assign to the message. Your administrator specifies the message classifications that you can use.
If you receive a message that uses message classifications, you can view the abbreviation for the classification in the subject line of the message and the full description for the classification in the body of the message. You can also view the abbreviation and full description for the classification for a sent message in the sent items folder.
Change the default message classification
Verify that your administrator has turned on message classifications.
Your BlackBerry® device is designed to use the default message classification when you send a message to a contact that you have not sent a message to or received a message from previously. If you have sent a message to or received message from the contact previously, your device tries to use the message classification that was used for the last message.
1.In the device options, click Advanced Options.
2.Click Default Services.
3.Change the Default Classification field.
4.Press the Menu key.
5.Click Save.
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