I know it has been covered in several different places, by several different people, but I want to confirm some information about Outlook Web Access. We have an SBS 2003 Server that is used as file/print server, and is behind a PIX managed outside our network by Corp HQ. I have NO ports open, so I use this server for internal mail and as a "storage" location for email, contacts, etc information. All clients have a POP3 account that comes directly into their outlook on the local machines, and the email is then stored in their Mailbox on the exchange server. I am needing to enable ONLY Outlook Web Access so someone can use their HTC Touch (PDA) to access their mail outside the network.
My question is this: Do I only need port 443? Unfortunately, they charge per port opened, and I've seen some responsed detailing several ports, while others detail only 443 or 443 and 25.