Article ID: 898124 - View products that this article applies to.
When you use a version of Microsoft Outlook Express that is listed in the "Applies to" section, you receive a newsgroup message or e-mail message in which the text is incorrectly interpreted as a blank attachment.
This problem occurs if the body of the message contains an invalid attachment header or attachment footer in UUEncode format. A UUE attachment header is a line that contains the word "begin," a space, three digits that represent UNIX file permissions, a second space, and a file name.
Outlook Express does not validate the number of permissions digits. Therefore, Outlook Express considers the line as a valid UUE attachment header when the line contains any number of UNIX file permissions digits. This includes a line that contains no UNIX file permissions digits.
Additionally, Outlook Express does not look for a valid UUE attachment footer. Even if there is no UUE attachment footer, Outlook Express displays an attachment and hides the text that is located underneath the UUE attachment header.
A UUE attachment footer consists of two lines. The first line contains a backtick (`) or a space. For Internet transmission, such as in e-mail messages or in newsgroup messages, the first line can be empty. The second line contains the word "end."
This problem occurs only in messages that are received in plain text format.
To partially resolve this problem, install update 900930. This update enables Outlook Express to validate three digits that represents the UNIX file permissions in a UUE attachment header. This update is not intended to fix the validation of a UUE attachment footer. For more information about how to obtain update 900930, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/900930/ )An update that addresses Outlook Express 6.0 issues is available for Windows XP
To work around this problem, follow these suggestions:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
UUEncode is a method that is used to send binary attachments in plain text messages. The name UUEncode is derived from "Unix-to-Unix encoding."
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.