[eddie]

Thanks for the quick response Kevin. I don't think it's a general multi-part handling issue with WM5 though. I ran another test by setting up an off-site account that does not use zimbra, sent identical test emails to both accounts simultaneously, and checked both accounts on the same WM5 device. Here are descriptions of each test email and the result for each server:

Plain text message (no mime encap)
zimbra - displayed fine
non-zim - displayed fine

Multi-part mime message with no html (body with single text attachement)
zimbra - body of message not displayed but attachment can be read
non-zim - both body and message displayed as expected

Multi-part mime html message (standard html message generated by kmail)
zimbra - no body displayed and no html available to download or display
non-zim - text body displayed with option of html view

This proves that WM5 *can* handle multipart messages but zimbra is doing something to the message that WM5 doesn't like. As I mentioned in my previous post, it looks like zimbra is removing the Content-Length: and Lines: headers which WM5 may actually require when processing multipart messages. Is there a way to configure zimbra not to delete those headers so we can run a test?

As usual.. thanks in advance for the help.

:edit to make more readable: