Microsoft Outlook Web Access S/MIME 6.5.7651.60

Microsoft Outlook Web Access S/MIME (Secure/Multipurpose Internet Mail Extensions) is a feature that provides end-to-end encryption and digital signing capabilities for email messages sent using the Outlook Web Access (OWA) web-based email client.

S/MIME encryption in Outlook Web Access uses public key cryptography. The sender uses the recipient's public key to encrypt the email message, and the recipient uses their private key to decrypt it.

Using S/MIME in Outlook Web Access ensures that your email messages are encrypted and secure, protecting sensitive information from unauthorized access. It also allows you to digitally sign your messages, providing a way to verify the authenticity and integrity of your emails.

To enable S/MIME in Outlook Web Access, you need a digital certificate. You can obtain a certificate from a trusted certification authority (CA) or from your organization's IT department. Once you have a certificate, you can import it into OWA and configure S/MIME settings.

In order to send and receive S/MIME encrypted messages with any email recipient, both parties need to have a valid digital certificate installed. If the recipient doesn't have a certificate or doesn't support S/MIME, you can still send them regular unencrypted messages.

Yes, S/MIME encryption can be used with Outlook Web Access on supported mobile devices. However, the specific steps to enable and configure S/MIME may vary depending on the device and operating system.

S/MIME is available in most versions of Outlook Web Access (now known as Outlook on the web), including both on-premises deployments and Office 365. However, the exact feature availability may depend on the specific version and configuration.

Yes, you can revoke or renew a digital certificate used for S/MIME in Outlook Web Access. Contact your certificate provider or IT department for assistance with revoking or renewing certificates.

Some limitations and considerations when using S/MIME in Outlook Web Access include the need for recipient certificate validation, compatibility with email clients and servers, and potential issues with email forwarding or accessing encrypted messages on multiple devices.

For more information about using S/MIME in Outlook Web Access, you can refer to the official Microsoft documentation or consult your organization's IT department for guidance specific to your environment.