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what's a ms-tnef file extension?

By akstephr ·
Has anyone out there ever heard of a file extension of ms-tnef? If so, what is it, and how can I open it? I keep getting them as e-mail attachments and I cannot open them.

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what's a ms-tnef file extension?

by Lo In reply to what's a ms-tnef file ext ...

Hi - Mail is not my world any more (been out of it for 5+ years) and it wasn't on a PC Platform to start.

I did a search for MS-TNEF. Lots of messages and discussion. Try the link below for a start.

http://www.ust.hk/itsc/email/tips/tnef/lo

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what's a ms-tnef file extension?

by akstephr In reply to what's a ms-tnef file ext ...

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what's a ms-tnef file extension?

by Craig Shepherd In reply to what's a ms-tnef file ext ...

Here's an exerpt from Tech Net which may explain what it is


Outlook and the Microsoft Exchange Client sometimes use a proprietary method to
package information for sending messages across the Internet. This method is
technically referred to as Transport Neutral Encapsulation Format (TNEF).


When a message containing TNEF information is received by a mail client that does
not understand TNEF, there are three common results:

- The plain text version of the message is receivedand it contains an
attachment named Winmail.dat. The Winmail.dat attachment does not contain any
useful information when opened since it is in the special TNEF format.

- The plain text version of the message is received and it contains an
attachment with a generic name such as ATT00008.dat or ATT00005.eml. In this
case the client is unable to recognize the TNEF part of the message, and is
unable to recognize the Winmail.dat file name, so it creates a file name to
hold theTNEF information.

- The plain text version of the message is received and the client ignores the
Winmail.dat attachment. This is the behavior found in Microsoft Outlook
Express. Outlook Express does not understand TNEF, but it does know to ignore
TNEF information. The result is a plain text message.

In addition to the receiving client, it is not uncommon for a mail server to
strip out TNEF information from mail messages as it delivers them. If a server
option to remove TNEF is turned on, clients will always receive a plain text
version of the message. Microsoft Exchange Server is an example of a mail server
application that has the option to remove TNEF from messages.

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what's a ms-tnef file extension?

by akstephr In reply to what's a ms-tnef file ext ...

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what's a ms-tnef file extension?

by akstephr In reply to what's a ms-tnef file ext ...

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