Mail attachments come through as winmail.dat

When I send out mail from MS Outlook enterprise account in the office to my Mac at home they are received as "winmail.dat" files. Even if I perform a "save as" to the correct file name the file format is still not recognized. Why is this happening!?

Found the answer.
Hope it helps others
http://galaxycow.com/blogs/vermyndax/2008/01/12/winmaildat-hides-in-your-autocom plete/

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I have an iPad 1. Using e-mail why do all my received attachments end up as winmail.dat files?

I have an iPad 1. Using e-mail why do all my received attachments end up as winmail.dat files?

http://support.apple.com/kb/TS1506
 Cheers, Tom

I cannot open emails in MAIL - they come through from Webmail, but I cannot open them....please help....

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Use Mail to access your emails and not a web browser.
If you have not done this before you can probably get instructions about setting up Apple Mail from your email provider's web site.

HT1338 pdf attachments and excel spreadsheet attachments are opening as winmail.dat and the pages are blank when you open them.

All of a sudden the e-mail attachments I send to my MacBook Pro from my PC Laptop open up as winmail.dat as a blank sheet of paper. This only started happening within the last week. Before that everything was fine. I check my PC and confirmed the attachments are set up to be sent in HTML. Any suggestions?

I am having the same issue.
Luckily I have only migrated my own mailbox to office365.
Tried both true and false TNEFEnabled on both onpremise and office365 via powershell and confirmed that both have been applied.
If I send the email as a plain text then the attachment works ok. If I send it as HTML then I get winmail.dat.
The above KB doesnt really help me, sending plain text emails is like going back to the dark ages!
I am sending from outlook to outlook (I send from my external email address, to my work email address and visa-versa)
If someone with an onpremise mailbox sends me an email, the attachment works ok.
If someone sends me an attachment via hotmail, the attachment works ok.
It seems to only effect emails I send to myself through outlook, i am sending it through a POP3 account to our onpremise exchange 2010 which forwards the email to office365

.docx attachments showing up as winmail.dat files

My wife and I both have comcast.net emails. When the secretary at our church sent both of us the same email with a .docx attachment, and we open the email on our IMac with Mail, it shows up under my email as a .docx (which I can open and read) but it shows up under my wife's email as a winmail.dat file. Why?

Yes. Our incoming mail servers are the same. When i go into Mail Preferences and look at Accounts, everything iin all three areas (account information, mailbox behaviors and advanced) are all the same except for our individual email addresses and passwords.
I just noticed by going back to some older emails in my wife's account that she has received .docx attachments from other church members (and they open up just fine). This would lead me to believe that it would be some setting on the church secretary's computer. I will forward your above referenced article to our church secretary and have her be sure her settings are set as recommeded.
I am still baffled, however, as to why my Mail account has not had this issue, and my wife's has.

Some mails on my iCloud Mail Account come through double.

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Some of the mails on my iCloud Account show up twice in the web-view at icloud.com and also on my iphone. This doesn't happen on the mail app on my iMac though, which is linked to the same account. Also this does not effect any mails from google+ and facebook.
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Let's try deleting the iCloud account from your iPad, then adding it back.
If you have any photo stream photos on your iPad, save them to your camera roll by opening your My Photo Stream alburm, tap Edit, tap the photos, tap Share, tap Save to Camera Roll. The force close the Mail app by double-tapping the home button, locating Mail in the list at the bottom, tap and hold Mail until it wiggles, tap to close it, then tap the home button agian.
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Please help! is there a (easy) way to remove/copy files to ext HD without changing ANY date? An d how about e-mail attachments, they also change all dates

Dear forum readers
All I want is to copy my pics to another disk without MAC OS change the date on wich I shot them. Pics, sent to me by e-mail also loose there original date. I understand the difference between making a new file by copying, but I don't understand why it change when I remove them.

There are two kinds of metadata involved when you consider jpeg or other image file.
One is the file data. This is what the Finder shows. This tells you nothing about the contents of the file, just the File itself.
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Photographs have also got both Exif and IPTC metadata. The date and time that your camera snapped the Photograph is recorded in the Exif metadata. Regardless if what the file date says, this is the actual time recorded by the camera.
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Why are mail attachments winmail.dat?

Why are the attachments on my emails coming through as winmail.dat now? Even Word (.doc) and photos (.jpg) attachments come through as winmail.dat on my macbook, ipad and iphone.

Did they come from someone using Windows?

How do I read an email attachment in MS Outlook that comes through as win mail.dat extension?

How do I read an email attachment in MS Outlook that comes through as winmail.dat file? Is there a setting I can change to make any attachment I receive from someone who has Windows? Thanks!

Hope this helps.
http://support.apple.com/kb/ht2614

How do i open winmail.dat attachments in mail

How do i open winmail.dat attachments in mail ?

Having problems with Winmail.dat attachments? This is really Windows problem but their hubris will not allow them to admit it.
Windows does have a global fix for this problem but it is not a general patch - in their KB there is a fix for Exchange servers which cause the winmail.dat problem but most users don't know about it or have it implemented.
http://support.microsoft.com/kb/138053http://
Here is a solution that Apple users can get for $30. An Austrian program and APP called Letter Opener http://www.creativeinaustria.com/http:// is the solution to seamlessly opening Winmail.dat files.

Exchange 2010 sends attachments as winmail.dat

Hi
Some users are complaining about pdf attachements they received as winmail.dat. This is an internally isue.
For external mail flow I disabled tnef conversion, seems to work. Is there a possibility to do the same thing for the internal mail flow?
Regards
Peter

Hi PeterN22,
Winmail.dat attachments are included in received e-mail messages is because the Winmail.dat file is used to preserve formatting that the sending
client includes in the message, but the receiving client does not recognize the Winmail.dat file.(The original message attachment is not always separate from the Winmail.dat file attachment, and may be included in the Winmail.dat file attachment.)
So it is important to clarify what clients were involved in both the sending and receiving the messages in question.
If this is occur in Outlook, here is a related document for you:
Winmail.dat attachments are included in received e-mail messages in Outlook
http://support.microsoft.com/kb/278061
Thanks,
Evan
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MAC 2011 email attachments converted to winmail.dat

Hello Guys,
Does anyone encountered the same when MAC 2011 receives email with attachments the attachment becomes winmail.dat? What are things might causing it in the server level. Please advice.
NOTE: This is not affecting only one user but.
Thanks!
Uddan

Hi,
The Winmail.dat file is used to preserve Rich Text formatting. Outlook uses it when sending a Rich Text-formatted message. During transport, the content of the message may be changed, preventing the receiving client from being able to read the formatting
instructions. In other cases, the receiving client does not use or recognize the winmail.dat file.
To prevent or work around this issue, please refer to this similar thread
http://answers.microsoft.com/en-us/mac/forum/macoffice2011-macoutlook/excel-files-appear-as-winmaildat-in-outlook-2011/3159066f-5f40-4d59-a4bb-b79cd3bab743
KB: How to Prevent the Winmail.dat File from Being Sent to Internet Users
https://support.microsoft.com/en-us/kb/138053
Best Regards.
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Lynn-Li
TechNet Community Support

PDF to winmail.dat

When attaching a PDF file to email (outlook) the recieving file comes in as winmail.dat. Anyone know how to fix this? A real pain.

It came through fine originally from my work email which I have not changed the settings of in over 8 years. I viewed it properly at 6:54 am today as a PDF. I just went back to view it again 30 minutes ago and it was no longer a PDF but this new type. I had already received it so how could it be an issue with Outlook? Would tis not be an issue with iOS 8.1.3?

Can't open "winmail.dat"

Hi!
I'm need help to open winmail.dat. "Ytnef" not working. The thunderbird plugin "lookout" not working too...I choose "winmail.dat" at attachments, "open" and nothing is going on there.
Are anybody solved such problem?

The Apple Mail Plug-in OMiC open winmail.dat files.

How do I open Winmail.dat?

How do I open Winmail.dat?

ajlayne wrote:
In Outlook, I changed the setting for how the mail sent to each typoe to resolve the issue. I created one email per setting and addressed to both people on their corporate exchange account (same server for both) and their gmail accounts. This is where the confusion arose since one phone receives fine and the other doesn't. I used Gmail as an alternate mail client with the same result.
So basically I used two different clients each time sending to four addresses two are located on each phone. Phone A always receives a winmail.dat file no matter which client or email address is used. Phone B always receives the attachment in it's correct format.
I took it a step further and used the phones to test sending. Even if I use Phone A to send to the other account on Phone A, winmail.dat is received. If done from Phone B to Phone A, Phone A winmail.dat persists. Phone A to Phone B correct format is received. I'm thinking there is a setting somewhere on Phone A I'm not aware of that was somehow changed since it is not mail client dependant nor recipient mail server dependant based on the testing results.
This is a Microsoft Windows setting with Microsoft Outlook or within the Exchange Server gateway in general. These winmail.dat files have been arriving on Linux, BSD, OS X, Tru64 Unix, ULTRIX, Solaris and many other servers for many years, too — unfortunately, everybody that's using non-Microsoft clients and tools encounters these files from time to time. The winmail.dat is a Windows Mail data file, after all.
If the mail client or if the mail server gateway sends a mail message to an iOS device — or many other "foreign" mail clients — that involves a winmail.dat file generated by the sending client or generated by the originating mail server gateway, then iOS will show the winmail.dat file. Like many other mail clients, the iOS mail client does not decode, process nor create these winmail.dat files. (Most clients simply treat these winmail.dat files as an arbitrary attachment on the message.)
Send the same messages to the same email addresses and read those messages via another mail client — one that doesn't have winmail.dat support — and you'll see the exact same behavior; a wad of attached winmail.dat data.
From Microsoft: How to Prevent the Winmail.dat File from Being Sent to Internet Users. In short, either the Outlook client settings or the Exchange Server (IMC) settings will need to be changed here.

Mail attachments come through as winmail.dat

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