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

ID: Q220905

The information in this article applies to:

Microsoft Exchange Server, version 5.5
Microsoft Windows CE version 3.0 Professional Edition for the Handheld PC

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, 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 will need to leave the Domain field in the Optional section blank, and populate the User ID field using the following syntax:
<Windows_NT_Domain>/<Windows_NT_account>/<Exchange_mailbox_alias>

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

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, holding down the ALT key while entering 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


Keywords          : 
Version           : WINDOWS:3.0 Professional Edition; winnt:5.5
Platform          : WINDOWS winnt 
Issue type        : kbprb

Last Reviewed: April 27, 1999