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This is a long-standing issue with OSX and Microsoft Exchange. &nbsp;Basically it is a problem with the way Exchange formats email attachments and the way Apple Mail interprets them. &nbsp;If you cannot edit the Exchange settings then changing email client to MS Outlook for OSX is one option.<br />
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Can you confirm the MS Exchange version you are using as there are settings in Exchange which can be used to address this issue?<br />
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Also, that is a very old version of OSX .. is there any prospect of upgrading the OSX version and Apple Mail as this can improve issues with SOME versions of Exchange.<br />
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In the meantime you can use a version of TNEFs Enough to open winmail.dat files.<br />
<a href="http://www.macupdate.com/app/mac/12705/tnefs-enough" rel="ugc">http://www.macupdate.com/app/mac/12705/tnefs-enough</a>
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Researched this issue further on the internet due to this being an urgent matter.
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Hi Experts,<br />
<br />
I have a mac user who is receiving any email with an attachment, with a 'winmail.dat' attachment. REGARDLESS of whether the sender sends as plain text, HTML or rich text. Has anyone come across this?<br />
<br />
Mac OS X 10.7.5<br />
Mail Version 5.3 (1283)<br />
<br />
Regardless of email text format, the attachment is coming through as winmail.dat.<br />
<br />
Thanks
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Hi Experts,

I have a mac user who is receiving any email with an attachment, with a 'winmail.dat' attachment. REGARDLESS of whether the sender sends as plain text, HTML or rich text. Has anyone come across this?

Mac OS X 10.7.5
Mail Version 5.3 (1283)

Regardless of email text format, the attachment is coming through as winmail.dat.

Thanks

winmail.dat issue

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.

Mac OS X

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.