[Mailman-Users] Archived attachments not converting

Hi!

We use mailman distribution lists to send out attachments to people around the world. I noticed that these attachments when viewed in the archives using Netscape are showing in line rather than converting to an attachment you can read. Is there anything I can do to change this? Most of the email addresses in the lists are accessed using Outlook, and I also send out the attachments using this program.

Hope someone can help.... Cheers, Danielle.