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Keeping in mind that I am using Exchange 2003, a couple of questions come to mind: 1. Does free busy work consistently while in OWA? 2. How many exchange servers do you have and have there been any exchange servers that were reloaded? Firm. From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Jon Galbreath Sent: Wednesday, March 11, 2009 4:47 PM To: [log in to unmask] Subject: Re: [MSUNAG] Strange Exchange issues You don't mention Public Folders, and while Microsoft tried to sweep them under the rug in Ex2007, they're still needed for Mac users. If you haven't set those up, that could be why the Free/Busy info isn't returning anything for the Mac users because Entourage still uses them to store FB info as well as download the GAL. Jon Jon Galbreath MCSE/Security+ Systems Administrator International Studies and Programs Ph: 517-884-2144 [log in to unmask] From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Kramer, Jack Sent: Wednesday, March 11, 2009 4:44 PM To: [log in to unmask] Subject: [MSUNAG] Strange Exchange issues We've been tangling with Exchange lately and I wanted to throw this out there in case anyone on the list had any ideas. Thanks in advance for any advice or pitying glances you can throw my way. Client environment is AD domain with Office 2007 and 2008 deployed. Server is Exchange 2007 SP1. Primary email addresses are firstname.lastname@domain, but logon is [log in to unmask] PC users cannot see certain Mac users' calendars / free-busy information. When a PC user looks at free/busy information, the availability service returns an error. Other Mac users can be seen by the PC users. The commonality between these users is that the Mac users that can be seen have used Outlook on a PC in the past. Additionally, Exchange isn't creating legacy free/busy mailboxes for users that haven't logged on through Outlook, even though I was under the impression that the free/busy service was supposed to crawl calendar data and create those automatically for legacy use. (to provide legacy compatibility with calendar entries made on OWA / Entourage) PC users can see Mac calendars when in Online mode, but still can't see free/busy information unless that Mac user logs in with Outlook on a PC to create a legacy free/busy mailbox. Once the legacy mailbox is created, the Availability Service returns the proper free busy information. Questions: why does a legacy free/busy mailbox need to exist for proper Availability Service functionality; why can PC users only see Mac calendars in Online mode, not in Cached; does the free/busy service on the Exchange server only update legacy mailboxes or can it be used to create them for Mac / OWA clients. From reading the Microsoft documentation it looks like everything is set up as it's supposed to be, which is where I hit the wall. Thanks, ---- Jack Kramer Computer Systems Specialist University Relations, Michigan State University w: 517-884-1231 / c: 248-635-4955