Hiya.
Is it possible to send e-mail through a secondary e-mail server, if the first one is not available?
E.g.
If the user can't connect to 192.168.0.80:25(110) try
123.456.789.123:3336(3337) [i.e, an external IP address with port forwarding]
I know we could just use VPN and tunnel in, but our connection isn't really suited to it, thanks!