Hello, I need your support and help. I have some Outlook clientes that connect via ISP to our network using to access their mail the POP3 and SMTP protocols in Outlook client, but I need to configure the Remote Transport to access the Exchange Server of our company. How can I configure this service in the Exchange Server ??? Is there a protocol that I need to open in the firewall ??? or What I need to do to configure the Microsoft Exchange Remote Transport to access the server with an ISP connecction out of the LAN ??? Thanks for your support. Best Regards. jperez.