[Mailman-Users] Hotmail Accounts Getting Filtered in RTF

[Mark Pallo]

Hello,
There seems to be a problem with a list I administer with Hotmail
accounts who are sending in "rich text" format being filtered.  It only
affects Hotmail users.  If they send in plain text they are fine.

Is there any sort of MIME type config I need to add so these don't
bounce?

I am using 2.1.5

Thank you.