Why can't I access my web server/email server from the inside via my relay?

Problem description

On the firewall, there is a relay forwarding packets from the outside to a server on the inside or on a DMZ. This works from the outside, but I can't access the server from the inside using the public IP or the server name.

What to do

The probable cause to this is that you haven't allowed the computers on the office network to use the relay. Do this:

• Go to the Networks and Computers page under Network and create a network which contains both the Internet and the office network. In some cases, you might already have such a network. To create it, create a new row with two groups in it. Select the Internet and the office network as subgroups (you probably have them as networks already). Select "-" as Interface/VLAN for both, and enter no IP addresses.
• Go to the Relays page under Rules and Relays and find out which relay handles the traffic you have problems with. Change Allow access from for this relay to the network you just created.
• Go to the Save/Load Configuration page under Administration and apply the changes.

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