User says they just installed an update to Office 365
Mac recipients are now getting winmail.dat attachments
I know how to fix this on the Mac side, but it's hard to tell all the recipients to download and add software.
Outlook is connected to an Exchange Server. Since the files are appearing as Winmail.dat, I assume that the version of the Exchange Server is such that it produces this output. I don't have control of the Exchange Server, and don't know how fast they can upgrade or otherwise change the Exchange Server.
Is there anything that we can do on the sending side?
Is the problem caused by the sending of multiple PDF attachments? Would sending one at a time help?