Have installed 5.0.8 on Ubuntu 6.06. Then I upgraded to 5.0.9 and the problem is still there.
Everything is working fine except auto forward.
Zimbra received the mail without problem but the forwarded mails have attachment issue.
e.g. I have 2 attachments, ppt and docx. The docx received ok but not the ppt, I found that the file size was changed. When I auto forwarded to Gmail, it was even worst, the size of all attachments became 0.
I have tried to disable OLE2 scanning but no luck.