Hi, I have installed 2 servers locally behind a smoothwall firewall. i have 5 external IP's internally - 1 IP is 192.168.3.10 and the other is 192.168.3.10 my firewall then forwards all traffic to the server's. My problem, domain1 on server1 returns an error when sending an email to domain1 on server2 Diagnostic-Code: smtp; 450 4.7.1 Client host rejected: cannot find your hostname, [192.168.3.1] but if i login to the sever and do "dig domain.name" it returns the external IP and mail.domain.name and vice versa.
