Consider the following scenario:
- User01, user02, and user03 are Microsoft Exchange Server 2010 users.
- User02 creates a rule so that any received email message from user01 is forwarded to user03.
- User01 sends an email message to user02. The email message contains Japanese (1 byte Kana) characters either in the body, in the display name, or in the file name of an attachment.
This issue occurs because a System.ArgumentException exception occurs when the GetCodePageCoverage method is called.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.