XADM: POP3 Secure Password Authentication

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Symptoms

Mail can not be downloaded or viewed using Microsoft Outlook Express Secure Password Authentication (SPA) to access messages on an Exchange Server computer. You may receive the following error message:

You could not be logged on to the mail server using Secure Password
Authentication. Please check your account information and verify that
your mail server supports Secure Password Authentication.
This functionality requires that Exchange Server has the Windows NT Challenge/Response enabled for the POP3 protocol.

Cause

This problem may occur when a client using SPA tries to log on to a mailbox where the mailbox alias is different than the Windows NT account. The mail client uses the computer's logon credential information for SPA and assumes that the mailbox alias will be the same as the Windows NT account.

Workaround

Change the users mailbox alias to match the Windows NT account in the Exchange Server Administrator program.

More Information

You can test this by telneting to port 110 of the server. After you receive the server's "ready" response from the Exchange Server computer, type "Auth NTLM," (without the quotation marks) and CRLF. If you get "+ OK," then the server supports Secure Password Authentication. Otherwise, you will receive "The NTLM Authentication package has been disabled for this protocol."
Vlastnosti

ID článku: 191558 – Posledná kontrola: 28. 10. 2006 – Revízia: 1

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