A user cannot log on when the user accesses the mailbox of an Exchange 2003 IMAP4 back-end server through an Exchange 2007 server that is serving in a CAS role
SYMPTOMSA
user uses a
Microsoft Office Outlook client to
access
the mailbox on a Microsoft Exchange
2003 IMAP4 back-end server through an Exchange 2007
server that is serving in
a Client Access Server (CAS) role. If the user’s
password contains one of the following characters or if the user’s username
contains one of the following characters, the user cannot log on:
incorrect user name or
password. Note If the mailbox is located on a Microsoft Exchange 2007 mailbox
server, the problem does not occur.CAUSE Based on the request for comment (RFC) 2060 standard, the
characters that are mentioned in the "Symptoms" section are not permitted in
the password or in the username unless one of the following conditions is true:
RESOLUTIONTo resolve this problem, install Update Rollup 3 for Exchange Server 2007.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935999 (http://support.microsoft.com/kb/935999/)
Description of Update Rollup 3 for Exchange Server 2007
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. MORE INFORMATIONFor more information about the RFC 2060 standard, visit the
following Web sites: http://www.rfc-editor.org (http://www.rfc-editor.org/) Microsoft provides third-party
contact information to help you find technical support. This contact
information may change without notice. Microsoft does not guarantee the
accuracy of this third-party contact information.
http://www.ietf.org (http://www.ietf.org) http://www.w3.org (http://www.w3.org) APPLIES TO
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