Microsoft KB Archive/220905

= XFOR: Error Retrieving Mail by IMAP4 on Exchange Server with Windows CE Inbox =

Article ID: 220905

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Windows CE 3.0 for the Handheld PC
 * Microsoft Windows CE 3.0 for the Handheld PC 2000

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This article was previously published under Q220905



SYMPTOMS
When you attempt to retrieve mail from a Microsoft Exchange Server computer version 5.5 mailbox by means of Internet Message Access Protocol 4 (IMAP4) using the Inbox client included with the Windows CE Handheld PC Professional Edition, Windows Pocket PC with Windows CE, or Windows CE for the Handheld PC 2000, you may receive the following error message:

! You can send messages but not receive them. Unable to log on. Please check user name and password.

In addition, the following events may appear in the application event log:

Event ID: 1300

Type: Information

Source: MSExchange IMAP4

Description:

An unauthenticated IMAP4 client IP_address issued the following command: 01be5f80bfb95780 AUTHENTICATE NTLM.

Event ID: 13004

Type: Error

Source: MSExchange IMAP4

Description:

Logon attempt from IP_address has failed: AcceptSecurityContext call failed with error Access denied.



CAUSE
You are attempting to access a mailbox that requires a clear-text password with Windows NT Challenge/Response (NTLM) authentication enabled.

Or, you are using ANSI characters in your password.



RESOLUTION
To resolve this issue, you have one of two options:

 Configure the Windows CE Inbox client's IMAP4 service wizard (on page 1 of 3) to use only clear-text passwords. To do this, you need to leave the Domain field in the Optional section blank, and populate the User ID field using the following syntax:

//

For example: If the Windows NT domain is Domain1 Windows NT account is User1 and the Exchange mailbox alias is U1, then the User ID field would be similar to the following:

Domain1/User1/U1

-or-

 Request your network or e-mail administrator to change the Exchange mailbox alias to match your Windows NT account.

Do not use ANSI characters in your password. An example of such an invalid password occurs when you combine certain key strokes to use characters in the ASCII extended character set, for example, when you hold down the ALT key while you type 23456 on the numeric keypad of your keyboard.



MORE INFORMATION
When the optional Domain field on page 1 of the Windows CE Inbox IMAP4 service wizard is populated, it forces the client to use Windows NT Challenge/Response authentication. By leaving this field blank, the client uses a clear-text password.

This article also applies to the Windows CE Inbox POP3 service wizard, although the errors and event IDs may differ.

STATUS
This is by design.

Additional query words: pMail IMAP clear text wince hardware hp journada jornada nec mobilpro mobilepro compaq aero airo arrow vadim clio cleo

Keywords: kbprb KB220905

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