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Switching off TNEF encoding on outlook 365?

We are using Outlook 365 as our mail client for our btconnect email account.
We have being using it for over a year without any problems but all of a sudden sending out to colleagues and friends we are getting advice that attachments are now coming only as winmail.dat files....

I have searched the various forums and they suggest using the Set-RemoteDomain Default -TNEFEnabled $false

However when I type in this command it says that Set-RemoteDomain is an invalid cmdlet

This was got from an entry on deargeek back in 2013 so presumably it has been surpassed... Can anyone suggest correct current commands as none of Microsoft suggestions have worked...

Thanks
Stephen

Reena Therese Espiritu

Hi Stephen,

Have you tried checking this article from Microsoft?

Prevent Winmail.dat attachments

Set-RemoteDomain -Identity <Name of Domain> -TNEFEnabled $false

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mountiers

ASKER

Hi Reena,

Thanks for reply but unfortunately this doesn't seem to work I get an error as mentioned above when I use the Set-RemoteDomain cmdlet saying not recognised as a command. I also want to use Default as I need it for all the Domains I send to...

Thanks
Stephen

mountiers

ASKER

Attached is an image file of message I am getting.... The prior commands are only examples I have used... I have tried a number of others too recommended by Microsoft!!!!

Stephen
IMAG0564.jpg

ASKER CERTIFIED SOLUTION

mountiers

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mountiers

ASKER

It is not a solution but it seems to be an action that only BT and Microsoft can take to resolve so I'm stuck!