2017-08-02 0:21 GMT+08:00 Yubin Ruan <ablacktsh...@gmail.com>: > 2017-08-01 22:54 GMT+08:00 Tom Hendrikx <t...@whyscream.net>: >> >> >> On 01-08-17 16:46, Wietse Venema wrote: >>> Yubin Ruan: >>>> Can anyone tell me how to point postfix to a VPN connection? I have >>>> setup a VPN listening at background on my Ubuntu and I want to point >>>> postfix to that listening port whenever postfix try to connect to the >>>> internet. >>> >>> Wietse: >>>> You specify >>>> /etc/postfix/main.cf: >>>> relayhost = smtp:[host on other side of tunnel] >>> >>> Gary Sellani: >>>> Could the host be something like 10.8.0.0/24? >>> >>> I wrote 'host' not 'network block'. >>> >>> Consider the network as a collection of layers. An example applicable >>> to Postfix looks like: physical layer (ethernet), network layer >>> (IP), transport layer (TCP), and application layer (SMTP). In this >>> architecture, an SMTP destination is a domain or host, where the >>> host may be specified as an IP address. It's not an IP address block >>> nor is it an ethernet broadast domain. >>> >>> Wietse >>> >> >> Maybe you (the OP) should clarify what you mean with 'connect to the >> internet'. Does this mean accepting email from hosts 'on the internet', >> does it mean sending email to random hosts 'on the internet', or does it >> mean something else? Explain in laymen terms what you're trying to do, >> your question is too vague. > > I have a shadowsocks client listening at 127.0.0.1:8888, and I want to > point postfix to that specified port when it try to connect to > internet. Put it in another words, I would like to make that address > (i.e., 127.0.0,1:8888) something like default gateway so that all my > network traffic go through it.
Currently I can set up a proxy in the browser (i.e., pointing the browser to that address (127.0.0.1:8888)) so that I got a VPN kind of thing. And now I want to set it up for postfix, and if possible, for every program in the system. Thanks, Yubin
