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path: root/nixosConfigurations/manwe/mailserver.nix
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{
  config,
  inputs,
  lib,
  ...
}:
with lib; {
  imports = [inputs.simple-nixos-mailserver.nixosModule];

  secrets = {
    dkim-key-azahi-cc = {
      file = "${inputs.self}/secrets/dkim-key-azahi-cc";
      path = "/var/dkim/${my.domain.azahi}.${config.mailserver.dkimSelector}.key";
      owner = "opendkim";
      group = "opendkim";
    };
    dkim-key-rohan-net = {
      file = "${inputs.self}/secrets/dkim-key-rohan-net";
      path = "/var/dkim/${my.domain.rohan}.${config.mailserver.dkimSelector}.key";
      owner = "opendkim";
      group = "opendkim";
    };
    dkim-key-gondor-net = {
      file = "${inputs.self}/secrets/dkim-key-gondor-net";
      path = "/var/dkim/${my.domain.gondor}.${config.mailserver.dkimSelector}.key";
      owner = "opendkim";
      group = "opendkim";
    };
    dkim-key-shire-net = {
      file = "${inputs.self}/secrets/dkim-key-shire-net";
      path = "/var/dkim/${my.domain.shire}.${config.mailserver.dkimSelector}.key";
      owner = "opendkim";
      group = "opendkim";
    };
  };

  nixfiles.modules.acme.enable = true;

  mailserver = let
    cert = config.certs.${my.domain.shire};
  in {
    enable = true;

    fqdn = config.networking.domain;
    domains = with my.domain; [azahi gondor rohan shire];

    localDnsResolver = false;

    certificateScheme = 1;
    certificateFile = "${cert.directory}/fullchain.pem";
    keyFile = "${cert.directory}/key.pem";

    lmtpSaveToDetailMailbox = "no";

    loginAccounts = with my.domain; {
      "azahi@${shire}" = {
        hashedPassword = "@HASHED_PASSWORD@";
        aliases = [
          "@${azahi}"
          "@${rohan}"
          "@${gondor}"
          "abuse@${shire}"
          "admin@${shire}"
          "ceo@${shire}"
          "postmaster@${shire}"
        ];
      };
      "samwise@${shire}" = {
        hashedPassword = "@HASHED_PASSWORD@";
        aliases = ["chad@${shire}"];
        quota = "1G";
      };
    };
  };

  services.fail2ban.jails = {
    dovecot = ''
      enabled = true
      mode = aggressive
    '';
    postfix = ''
      enabled = true
      mode = aggressive
    '';
  };
}