You have an email message that has an attachment in a Microsoft Exchange Server 2007 environment.
The attachment itself is a signed email message that also contains an attachment.
You try to use the X-MS-ENUMATTS method of Web Distributed Authoring and Versioning (WebDAV) to enumerate the attachment in the signed email message.
In this scenario, the returned URL is incorrect. The returned URL misses the path of the outer message.
For example, the returned URL is expected to use the following syntax:
<path of server>/<path of outer message>/<path of inner message>/<path of attachment>
However, the returned URL uses the following syntax:
<path of server>/<path of inner message>/<path of attachment>
Because of this behavior, applications cannot enumerate an attachment correctly. Therefore, it effects applications that use WebDAV, such as Microsoft Dynamics, when they communicate with Exchange Server 2007 servers.
To resolve this issue, install the following update rollup:
2530488 Description of Update Rollup 3 for Exchange Server 2007 Service Pack 3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the X-MS-ENUMATTS method, visit the following Microsoft website: