Hello,
On Tue, 27 Apr 2021, R-VISOR-TOVIS wrote:
My home server have no static, but public internet address using
freedns.
This weakness was draw me to use VPS with static, public ip address.
[...]
Seem to be I need sasl authentication between my home server and vps
server. That mean I need to study how do it with exim4 (on my home
server).
You could "fake" a static IP by using a VPN to connect your home server to your
VPS -- which BTW will give you other advantages such as allowing you to restrict
ssh usage only to your home server, etc.
For such one-to-one VPN I use and recommend Wireguard.
This way you could set up your exim (home server) to relay to the VPS's VPN IP
(like 10.0.0.1), and your postfix (VPS) with "mynetworks" including your home
server's VPN IP (like 10.0.0.2/32).
Just an idea..
(I use Wireguard like this, but not for mynetworks, I use and prefer SASL for
this, but with postfix-to-postfix it's easy, I have no idea about exim so I
cannot help on that).
Good luck.
