Hey Everyone, I would like to lock down my Exchange server by activating the Windows Firewall (Server 2003 Standard and Exchange 2003 Enterprise). When I activated the firewall, I thought I allowed all the proper exceptions but I was not able to connect with Outlook. I know that port selection is dynamic in a lot of cases but does anyone know of any specific port I should be allowing in order to successfully connect an Outlook client (from the inside of the network, same subnet as the Exchange server)?? Any help anyone would give would be great! Rich -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.14.20/233 - Release Date: 1/18/2006