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The Agent-Based Authentication supports all types of authentication methods such as One-Time Password etc, but it requires end users to install an Outlook Addon, the DualShield Outlook Agent software, on their PCs and workstations.
| MFA Implementation | Protocol Supported | OS Supported | Exchange Supported |
|---|---|---|---|
| Device-based | MAPI and EWS | Outlook for Windows, Outlook for Mac | Exchange 2016, 2019 |
| Agent-based | MAPI and RPC over HTTP | Outlook for Windows only | Exchange 2013, 2016, 2019 |
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