On 2021-08-25, Sabahattin Gucukoglu via Exim-users <exim-users@exim.org> wrote: > I am thinking about how I’ll manage to send and receive mail from the > Internet by way of a proxy, with SOCKS for outbound and proxy-protocol for > inbound mail, where the proxy is also potentially a backup MX. The idea is > that I will run the mailer on a network with a dynamic connection, and use a > VPS with a fixed IP for connectivity that’s trustworthy for other MX hosts, > which only accepts mail when the ISP connection goes down for a noticeable > period. I could even extend the client connection through a VPN, so the ISP > is oblivious to how it’s used (the country in question has a very flexible > approach to civil liberties). > > The doc says Exim recognises a proxy host by IP; does this mean I > can’t receive ordinary mail from it as a secondary MX? If not, how do > you think I ought to go about this?
Tell the proxy protocol host to deliver email to it's own extenal ip address, that will cause it to open a proxy connection to the exim server. > What about if I extent this setup so that my mailer machine only makes > outbound connections to the proxy host—can I still receive inbound mail, > through a forwarded port perhaps? SSH seems like the obvious answer, but then > I’d lose sender information, yes? I could use an inner VPN, perhaps. But > something that only carries application-layer traffic would be nicer. Exim > supports SOCKS, but not the bind method—perhaps that would be useful. I'm not sure what you mean. -- Jasen. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
