Hello Gurus, What are the protocol and port numbers used for the following servers at Exchange 2007 Environment & Windows 2003 ??? Mailbox to Hub Transport = Hub Transport to Mailbox = Hub Transport to Hub Transport = Hub Transport to Client Access = Client Access to Hub Transport = Hub Transport to Client Access = Client Access to Client Access = Mailbox to Client Access = Client Access to Mailbox = Hub Transport to Edge Transport = Edge Transport to Hub Transport = Edge Transport to Edge Transport =Cluster Active Node to Cluster Passive Node =Exchange Servers 2007 to Active Directory / Windows 2003 = Active Directory / Windows 2003 to Exchange Servers 2007 = Exchange Servers 2007 to ISA Server 2006 = ISA Server 2006 to Exchange Servers 2007 =Thanks in Advanced.Regards, Amjuu ..

Hi Amjad,Check this out http://support.microsoft.com/kb/832017You need to figure out the basic funstionality of each component and then you can check the port numbers based on that with the table in the article.Raj

Hi,Mailbox-hub/CAS RPCHub-hub/edge SMTPCAS-CAS HTTP(s)Exchange-AD LDAP 3286 for GC,389 for DCCluster and ISA related,please refer to kb832017Regards,Xiu