Attachments are Zipped Automatically in Outlook 2011

A visitor to our OutlookForums had this question about Outlook 2011 for Mac: When I attach files to email, it is automatically compressed (zip'ed). Is there any way I can turn this off? ...and where? ...I have looked everywhere and I can't find it. This is the result of importing from Entourage 2008. When you  

Zip Files Don't Display in the Insert File Dialog

Problem: When you open the Insert File dialog in when composing an email message, Outlook "hides" the zip files in the directory. The only way to add a zip as an attachment to a message is by opening Windows Explorer and dragging the file to the message window. Cause: Windows has a system component that  

OWA saves .docx and .xlsx file as .zip

OWA saves .docx and .xlsx file as .zip

We've had a lot of complaints about OWA saving Office 2007 files using the zip extension the last few weeks. It's an old issue and I'm surprised at the number of times it's come up recently. My best guess is that a lot of organizations with Exchange 2003 are only now upgrading to Office 2007.