how do i sync my public folders in exchange

There is another option available. Here is a blog posting about an enterprise software product that will sync a public folder to multiple exchange mailboxes.

The public folder contacts can be pushed to the main contact folder, or a subfolder. In either case, the contacts will then sync to the iPhone using Exchange Server ActiveSync.

Unfortunately that is not possible at this time.

Well it is possible, but you will need to ask your server admin for help. A sort of workaround I would call it. There's an app that is installed on the server side. It syncs up specified public folders with users' mailboxes. Then, after the public data is pushed to a private folder, you can easily view it on an iPhone by means of Exchange Active Sync. See this:

http://www.codetwo.com/exchange-folder-sync/

Hope this helps.

If you have to sync the public folders only for one user, you can use the free license from here: http://www.somebytes.net/137-1-Freeware.html

If your email is on Office 365, there is now a SaaS option as well called CiraSync that will sync public folders and the GAL to Outlook Contacts (and also your iPhone)

I'm not sure how much this is relevant but we've been in similar situation. We ended up installing http://smartafone.com/ on our exchange 2007. We can sync all of our public folders, contact or calendars. They have responsive support team which is handy. Hope it helps.