Need urgent help!! Not getting emails from Exchange 2007 server in Mac OSX.

Hello Spiceworks Comminity!!

First of all, my apologies as I am putting Mac OSX issue under windows discussion. But this is related to my exchange server environment.

Issue: MAC OSX outlook is not getting any emails from my exchange 2007 server. This is happening with all Macbooks in my Org. But all windows outlook clients are receiving emails.

Troubleshooting steps undertaken already: 

1. Reinstalled MS office 2011 in the Macbooks.

2. Checked and rechecked all the path settings to exchange server.

3. No updates on MacOSX been released recently. Checked that as well.

Please someone shed some light into this issue as I dont know and couldnt find a solution myself or from google.

Thanks in advance guys.