Hello everybody,
We have two locations connected though the Internet. At the both ends we have SecureComputing SG-560 firewall appliances. For the connection between the sites we defined an IPsec VPN tunnel. The problemconsists in that that we had to install an additional Exchange server in the remote location, and this server doesn't have SMTP communication with the Master server. I have tried to telnet the SMTP server from the inside of the remote LAN and it works. Trying to telnet it from the main office, it doesn't work. This gives me the idea of a misconfiguration of the firewall. Can anyone advise me how can we open the 25 port to be forwarded through the IPsec tunnel?
Thank you very much.