Configure reverse DNS in order to avoid mail seen as spam. From command line you can check as follow
$ nslookup ktln2.org
Server: 127.0.0.1
Address: 127.0.0.1#53
Non-authoritative answer:
Name: ktln2.org
Address: 46.102.247.82
Philipp Hossner phihos
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| { config, pkgs, ... }: | |
| let | |
| # Import unstable channel. | |
| # sudo nix-channel --add http://nixos.org/channels/nixpkgs-unstable nixpkgs-unstable | |
| # sudo nix-channel --update nixpkgs-unstable | |
| unstable = import <nixpkgs-unstable> {}; | |
| in | |
| { |