How To Guides > Accelerate Exchange and Microsoft Outlook Traffic (MAPI) > Accelerate Exchange and Microsoft Outlook traffic > Turn Off MAPI Encryption in Microsoft Outlook

Turn off MAPI encryption in Microsoft Outlook

Exinda recommends that encryption of contents and attachment for output messages should be disabled to maximize reduction, as each user will encrypt files with a different key. MAPI Encryption is a client side configuration parameter in Outlook. Therefore, to disable MAPI encryption you need to make the change on each Outlook client.

You must disable encryption on all Microsoft Outlook clients as well as the Exchange server. See Disable encryption on the Exchange server.

ClosedTurn off MAPI encryption in Outlook 2003
  1. Open Microsoft Outlook.
  2. Configure the Trust Center.
    1. On the Tools menu select Options.
    2. Switch to the Security tab.
    3. Ensure the Encrypt contents and attachments for outgoing messages checkbox is not selected.
    4. To close the dialog and save the settings, click OK.
    5. To close the Options dialog, click OK.
  3. Configure the Account Settings.

    1. On the Tools menu select Email Accounts.

    2. On the E-mail tab, select the email account and click Change.
    3. On the Server Settings page, click More Settings.
    4. Switch to the Security tab.

    5. Ensure the Encrypt data between Microsoft Outlook and Microsoft Exchange checkbox is not selected.

    6. To close the dialog and save the settings, click OK.
    7. To close the Server Settings dialog, click Next and Finish.
ClosedTurn off MAPI encryption in Outlook 2007
  1. Open Microsoft Outlook.
  2. Configure the Trust Center.
    1. On the Tools menu select Trust Center.

    2. Click Trust Center Settings.

      The Trust Center dialog opens.

    3. Click E-mail Security.

    4. Ensure the Encrypt contents and attachments for outgoing messages checkbox is not selected.

    5. To close the Trust Center dialog and save the settings, click OK.
    6. To close the Options dialog, click OK.
  3. Configure the Account Settings.

    1. Outlook 2007: On the Tools menu select Account Settings.

    2. On the E-mail tab, select the email account and click Change.
    3. On the Server Settings page, click More Settings.
    4. Switch to the Security tab.

    5. Ensure the Encrypt data between Microsoft Outlook and Microsoft Exchange checkbox is not selected.

    6. To close the dialog and save the settings, click OK.
    7. To close the Server Settings dialog, click Next and Finish.
ClosedTurn off MAPI encryption in Outlook 2010 and 2013
  1. Open Microsoft Outlook.
  2. Configure the Trust Center.
    1. On the File menu select Options.

    2. Click Trust Center > Trust Center Settings.

      The Trust Center dialog opens.

    3. Click E-mail Security.
    4. Ensure the Encrypt contents and attachments for outgoing messages checkbox is not selected.
    5. To close the Trust Center dialog and save the settings, click OK.
    6. To close the Options dialog, click OK.
  3. Configure the Account Settings.
    1. On the File menu select Info > Account Settings.
    2. On the E-mail tab, select the email account and click Change.
    3. On the Server Settings page, click More Settings.
    4. Switch to the Security tab.
    5. Ensure the Encrypt data between Microsoft Outlook and Microsoft Exchange checkbox is not selected.
    6. To close the dialog and save the settings, click OK.
    7. To close the Server Settings dialog, click Next and Finish.

Note

These parameters are configurable through a global change so that each client does not need to be individually changed.

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Last Updated: Monday, February 1, 2016 at 12:26 PM

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