Closed Bug 855632 Opened 11 years ago Closed 11 years ago

PDF attachments showing as winmail.dat

Categories

(Thunderbird :: Untriaged, defect)

17 Branch
x86_64
Linux
defect
Not set
normal

Tracking

(Not tracked)

RESOLVED DUPLICATE of bug 77811

People

(Reporter: stefano.fornari, Unassigned)

Details

Attachments

(3 files)

Attached image thunderbird screenshot
User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130307122903

Steps to reproduce:

A friend sent me an email with a pdf attached.


Actual results:

I see it as a generic winmail.dat attachement instead of the pdf. Google mail shows it correctly. (see screenshots)


Expected results:

It should show the attachment like gmail (New Sync-Gen II Manual Release V104 July 2012.pdf)
Attached image gmail screenshot
Attached file the email
Comment on attachment 730577 [details]
the email

That's because it indeed *has* a winmail.dat attachment...

Relevant message headers:

> X-MS-Has-Attach: yes
> X-MS-TNEF-Correlator: <D9D0CF1DEFDCE3468B80294416C3CCAC396C56AF@sgbecmb01>

Attachment headers:

> Content-Disposition: attachment; filename="winmail.dat"
> Content-Transfer-Encoding: base64
> Content-Type: application/ms-tnef; name="winmail.dat"

This is a proprietary Microsoft format used in their Outlook and Exchange products. Tell the sender to send "HTML" rather than "Rich Text Format" messages to resolve the issue at the source.

Alternatively, there is an extension to unpack such TNEF attachments:
https://addons.mozilla.org/thunderbird/addon/lookout/ (may need tweaking to work with 17.0.x, see review comments).
Attachment #730577 - Attachment mime type: application/octet-stream → text/plain
Status: UNCONFIRMED → RESOLVED
Closed: 11 years ago
Resolution: --- → DUPLICATE
From a user perspective, since other mail clients are capable of showing the right content, this is defeinitely a problem, regardless the technical details.
Thanks for taking the time to look into this. I will follow the master bug.
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