Hi, i am setting up a waas poc at a customer site. they use a linux box Zimbra as their email-server and owa as the email client. the problem is when they try to attach a file to their e-mail, they get the following error ???ztaglib.TAG_upload_failed???. When the wae is not on the network though, they are able to add attachment to their mail.Does any one have any idea what can be causing the problem?