[Mailman-Users] Reply Bodies as Attachments

I'm having the same problem on all of my lists, which most people read on their Android or IOS devices.

When I send something out, if anyone replies, it is delivered with my defined header and footer, but the body is an attachment which can't be read. It says, "No Application Available for This Content".

I've looked through all of the settings and can't find anything related to it or that affects it.

Rex Goode