This shows you the differences between two versions of the page.
using_exim_behind_a_nated_connection [2016/11/25 22:38] (current)
|Line 1:||Line 1:|
|+||===== Using Exim behind a NATed Connection =====|
|+||When using Exim behind a NATed connection, such as a consumer grade ADSL or Cable line, where the Exim machine's IP address is a local address which isn't routable and the router or firewall uses port forwarding to send the SMTP and POP3/IMAP ports to the correct machine, you may well get mailing loops where Exim tries to forward a mail to the MX record specified in DNS, which is in fact itself, causing mail loops.|
|+||To solve this you need to tell Exim that it's world visible IP address is different to it's own real address. Insert the following beneath the ''MY_IP = '' line:|
|+||extra_local_interfaces = <routers external IP>|
|+||Where <routers external IP> is the Internet visible IP address of your router or firewall, on which everybody else will address your Exim machine.|