Prevent a recipient from reading a secure, CSEES-encrypted message you have sent

• Overview
• Register your IU email address
• Lock an encrypted message
• Expire an encrypted message
• Unexpire an encrypted message

Overview

Through the Cisco Secure Email Encryption Service (CSEES), you can lock or unlock, and expire or unexpire encrypted messages; you can also check the read status of a sent message. To do these tasks, you must first register your Indiana University email address with CSEES; once your IU address is registered, you can then manage all encrypted sent messages, even messages sent before registration.

Register your IU email address

See Register your IU Exchange email account with CSEES.

Lock an encrypted message

If you want to prevent the recipient of a secure message from being able to decrypt the envelope and read the contents (for example, if you sent it to the wrong recipient), you can lock the message.

1. Log into https://res.cisco.com/.
2. Click Manage Messages in the left menu.
3. In the "Keyword" box, enter some search terms to find the message, and then click Search.
4. Locate your message in the results, and then click the subject of the message.
5. On the "Update Sent Message" page, next to "Locked", click either the lock icon or No.
6. In the pop-up window, provide a reason for locking the message, if you want. This text will be displayed to the recipient on attempting to decrypt the message.
7. Click Update to close the pop-up window.
8. Click Save.

Expiring an encrypted message

You can set an encrypted message to expire on a specific date. Once that date arrives, the recipient will no longer be able to decrypt the message and read the contents; the recipient will see the text "Message expired. Contact sender to reactivate."

This process can be reversed.

1. Log into https://res.cisco.com/.
2. Click Manage Messages in the left menu.
3. In the "Keyword" box, enter some search terms to find the message, and then click Search.
4. Locate your message in the results, and then click the subject of the message.
5. Click the calendar icon, or manually fill in an expiration date.
6. Click Save.

Unexpire an encrypted message

To remove an expiration date:

1. Log into https://res.cisco.com/.
2. Click Manage Messages in the left menu.
3. In the "Keyword" box, enter some search terms to find the message, and then click Search.
4. Locate your message in the results, and then click the subject of the message.
5. Clear the expiration date field.
6. Click Save.