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Receiving email attachments as winmail.dat ... HELP


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#1 revsurgical

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Posted 18 January 2017 - 12:15 AM

Whenever I receive emails from one particular email domain (there are several people that regularly send me emails from this domain), the attachments come through as a single winmail.dat file rather than the actual PDF, XLS, etc, files. 

This happens on all devices (MacBook, iPhone, iPad, and my colleagues Samsung and Laptop) and mail software (currently using Outlook, but have tried Apple Mail and same issue). 

The only way to retrieve the attachments is to login to the online server/host and then either download from there or forward the email to myself, in which case they come through fine.

Emails with attachments sent from any other domain are fine, just this particular one is having the issue.

Please help!!!!



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#2 MoxieMomma

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Posted 18 January 2017 - 12:27 AM

Hello and welcome:

 

It would help to know what version of Outlook, but this has been a longstanding problem.

 

Here is one possible solution:

 

Recipients receive a winmail.dat attachment

 

 

An internet search for "outlook winmail.dat attachment" will turn up several others.

 

Thanks,

MM



#3 technonymous

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Posted 18 January 2017 - 04:00 AM

More info from MSFT...

 

https://support.microsoft.com/en-us/kb/278061



#4 Trikein

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Posted 18 January 2017 - 03:42 PM

IMO it's not the domain or the email client, but the way they are sending email with the client. Outlook uses a proprietary(I think) method of sending email with "Rich Text" that makes all other email clients see that method as a external attachment. You could use your Outlook to view it, actually not sure why that didn't work, but that wouldn't work with Apple Mail or other email clients. For that, the sender needs to change the format in which they are sending. Try emailing this link with instructions to do so.



#5 revsurgical

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Posted 18 January 2017 - 03:54 PM

Thanks for everyone's replies!

 

We've actually tried the method of having the sender change the email format and this still hasn't worked, and we definitely still receive the file as winmail.dat when using Outlook (2013 version). Also having googled the issue in the past, this seems to be the fix for the majority of cases but hasn't worked for us! 

 

It's just interesting that it has never been an issue from other senders using Outlook - it only occurs from this one particular email client. Someone mentioned it could have something to do with the difference in security levels between the sender and our email server, but not being someone who is overly technically proficient, I wasn't sure if this was a possibility?



#6 Trikein

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Posted 18 January 2017 - 04:04 PM

If they are still sending in Rich Text, then it's user error on their part. You can lead a horse to water....

 

The reason it works with most other Outlooks is most Outlook use HTML by default. My guess is the sender has HTML disabled for security reasons. Did you send them instructions to change to HTML? If so, that could be the issue if HTML is blocked. Have them try sending with normal plain text. 






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