XADM: Encrypted Message Unreadable When TNEF Is Turned On |
The information in this article applies to:
-
Microsoft Exchange Server, versions 5.0, 5.5
SYMPTOMS
Encrypted messages sent to a transport-neutral encapsulation format (TNEF)
recipient arrive as attachments and are unreadable if Internet Mail (IMAIL)
is configured for TNEF.
CAUSE
This problem resulted when S/MIME encrypted messages were being sent as
TNEF attachments when sent to a TNEF recipient, resulting in the received
message being unreadable. TNEF has subsequently been disabled on outbound
for encrypted messages.
STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.0.
A supported fix is now available, but has not been fully regression-tested
and should be applied only to systems experiencing this specific problem.
Unless you are severely impacted by this specific problem, Microsoft
recommends that you wait for the next service pack that contains this fix.
Contact Microsoft Technical Support for more information.
This fix has been posted to the following Internet location:
ftp://ftp.microsoft.com/bussys/exchange/exchange-public/fixes/Eng/Exchg5.0/Post-SP2-STORE/
Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem has been corrected in the latest U.S. service
pack for Microsoft Exchange Server version 5.5. For information on
obtaining the service pack, query on the following word in the Microsoft
Knowledge Base (without the spaces):
S E R V P A C K
Keywords : XADM
Version : WINDOWS:5.0,5.5
Platform : WINDOWS
Issue type : kbbug
