Does Outlook use NTLM?

Outlook attempts to authenticate using NTLM only. If you disable or do not configure this policy setting, Outlook will attempt to authenticate using the Kerberos authentication protocol. If it cannot (because no Windows 2000 or later domain controllers are available), it will authenticate using NTLM.

What is NTLM authentication in Outlook?

NTLM is an authentication protocol used primarily by Microsoft applications to securely authenticate over a network. MailEnable provides NTLM support for the IMAP, POP, and SMTP, allowing NTLM capable mail clients to securely negotiate credentials when authenticating.

How do I configure Outlook Anywhere?

Go to the Outlook Tools menu and click on Account Settings. Select the Exchange account, and click on Change. Click on More Settings>> Connection tab. Now, under Outlook Anywhere, check the option of Connect to Microsoft Exchange using HTTP.

Does Exchange 2016 use NTLM?

NTLM authentication is only available for Exchange on-premises servers.

How do I stop NTLM authentication?

To disable outgoing NTLM authentication traffic locally:

1. Run secpol. msc.
2. Browse to Security Settings\Local Policies\Security Options.
3. Set the Network Security: Restrict NTLM: Outgoing NTLM traffic to remote servers setting to Deny All.

How do I configure NTLM authentication?

How to Configure NTLM Authentication

1. Go to USERS > External Authentication.
2. Click the NTLM tab.
3. Enter the NTLM/Kerberos realm name in the Domain Realm field.
4. Enter the Netbios Domain Name.
5. (Optional) Enter the MS Active Directory Workgroup Name.

Is Outlook Anywhere enabled?

Enable Outlook Anywhere Using Exchange Management Console: Login to Exchange Server and open Exchange Management Console. Go to ‘Server Configuration’ and click the ‘Client Access’ option under console tree. Click the ‘Enable Outlook Anywhere’ option in the action pane.

Should I disable NTLM authentication?

To make the Windows operating system use more secure protocols (e.g. Kerberos version 5), it is recommended to disable outgoing NTLM authentication traffic for the machine where you plan to deploy Netwrix products.

How do I find my NTLM settings?

Click down to “Local Computer Policy -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options. Find the policy “Network Security: LAN Manager authentication level”. Right click on this policy and choose “Properties”. Choose “Send NTLMv2 response only/refuse LM & NTLM”.

Where do I find NTLM in Outlook Anywhere?

Click servers tab. Double-click server from the list. Click Outlook Anywhere from the page. You should use Negotiate over Basic authentication, as Basic sends the username and password in the clear, and NTLM is Windows Authentication.

When to use NTLM or HTTP Basic authentication?

Typically, mobile devices use HTTP Basic authentication, while Outlook Anywhere clients can use both NTLM and HTTP Basic authentication. APM determines whether a client uses NTLM or HTTP Basic authentication and enforces the use of one or the other.

When to use negotiate or NTLM in Outlook Anywhere?

Outlook Anywhere is a fallback method and is used if clients doesn’t support MAPI over HTTP. Click servers tab. Double-click server from the list. Click Outlook Anywhere from the page. You should use Negotiate over Basic authentication, as Basic sends the username and password in the clear, and NTLM is Windows Authentication.

Do you need an exchange profile to use NTLM?

APM requires an Exchange profile to support Microsoft Exchange clients, regardless of the authentication they are configured to use. Microsoft software systems use NTLM as an integrated single sign-on (SSO) mechanism. However, in an Active Directory-based SSO scheme, Kerberos replaces NTLM as the default authentication protocol.