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Email attachment coming in as winmail.dat

Posted on 2014-04-11
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Last Modified: 2014-04-16
I have some users reporting this issue. An outside user send attachments to me, it comes through fine, jpg or zip, pdf etc. But if the outside user send it to this user internally, the attachment comes in as winmail.dat. This issue started occurring after I move from exchange 2003 to 2010.

I made sure the outside user is sending it as html because I got the attachment.
On the internal user that is getting winmail.dat file, I look at those emails and the format is all text file instead of html. There's no formatting or logos.

How can their account be forcing emails to text instead of html? But it might be a different email issue.

Our email scanning software is not related, was on with support and we turn off everything and test, still same issue.
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Question by:uscost
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by:Tony Giangreco
ID: 39994461
Those email are probably coming from Macs or other apple products. You may need to change you email format.
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by:uscost
ID: 39994475
what do you mean by email formats?
Thanks
The external user is on win7, exchange 2010 and outlook 2010.
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uscost earned 0 total points
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by:uscost
ID: 40003505
found it on expert exchange
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