So we moved to office 365 mail quite a while ago. I just recently learned that some users have issues receiving emails with attachments etc.

They can see the plain test body of the email but any attachments etc are bundled into a winmail.dat file as an attachment.

Seems normally to be an issue with icloud and gmail recipients.

After spending a couple of hours with dooctor google, I found that the problem is when some mail is being sent it will be in rtf format (rather than html).

I suspect that sometimes even if the user sends in HTML the mail server is converting it to rtf.

Anyway - I created a 'remote domain' for icloud and changed a setting 'use rich-text format' to Never.

This seems to have fixed the problem when sending to icloud users - but I dont want to set up lots of remote domains.

My question is - Is there any downside me just changing the 'default' connection to 'never use rtf'?