Yes, XWall can relay SMTP mail. By default, out of the box the relay function is turned off. We recommend a conservative approach when enabling the relay function in XWall. In other words, be careful and understand what you are doing. You don’t what to enable an unrestricted relay. Such a relay would be abused by spamers in a matter of days. Here are the relay options in XWall. • Open relay • Relay restricted to host names • Relay restricted to IP addresses • Relay for authenticated (NTLM) users • Relay accessible via user name and password The first three options are handled under XWall administration (Mbadmin) go->view->options->relay. If you check the first flag “ALLOW RELAY of SMTP MESSAGES,” you are opening the relay to everybody. Usually, you don’t want to check that flag. The option you see checked below will allow relay from specific addresses. These addresses can be internal or external. They also can include a range. For example, to allow relay from address 192.168.1.1 throug