I have a small Zimbra (25 users) installation where most of the clients use Mac Mail. All has been pretty smooth so far, but I one small problem that is growing into a large one. The users in both the sent and inbox folders when receiving email with an attachment will not get the icon in the listing of everything in the box till they open the email.

Because of the nature of the client's business they have to know if an email has an attachment or not before opening the email.

Any ideas would be appreciated.