Berwn
1cb6f39ea2
mx1 runs Simple NixOS Mailserver (Postfix/Dovecot/Rspamd/OpenDKIM) for cnx.email. The TLS cert is obtained via ACME DNS-01 using a dedicated, scoped TSIG key (acme_mx1) that ns1 authorizes for only _acme-challenge.mx1 and _acme-challenge.mta-sts on the cnx.email zone, so the credential can write nothing else. Mailbox passwords are auto-minted by a clan vars generator (four-word passphrase + number). DANE TLSA (3 1 1) is published for _25._tcp.mx1; --reuse-key keeps the key digest stable across renewals. MTA-STS is enforced via a Caddy vhost serving the policy on :443 from the same cert (mta-sts SAN). Firewall opens 25/587/465/143/993/443; 80 stays closed.
23 lines
511 B
Nix
23 lines
511 B
Nix
{ config, inputs, ... }:
|
|
let
|
|
hosts = import ../../modules/hosts.nix;
|
|
in
|
|
{
|
|
imports = [
|
|
inputs.nixos-mailserver.nixosModules.default
|
|
../../modules/mail.nix
|
|
../../modules/static-ipv6.nix
|
|
../../modules/monitoring/exporters.nix
|
|
];
|
|
|
|
clan.core.sops.defaultGroups = [ "admins" ];
|
|
|
|
# Public IPv6 (from modules/hosts.nix); SLAAC doesn't bring it up here.
|
|
cnx.staticIPv6 = {
|
|
enable = true;
|
|
address = hosts.${config.networking.hostName}.ipv6;
|
|
};
|
|
|
|
services.timesyncd.enable = true;
|
|
}
|