Using version 4.5.6_GA_1044.RHEL4 Network Edition
When a user is forwarding multiple emails to another user (select multiple emails > right click > choose "forward items" )from Outlook 2003 using connector ...
the web interface for Zimbra cannot open these attachments. However if the receiving user opens Outlook 2003 (using connector) all attachments are available. It appears to be a script problem but I'm not sure.