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feat[server]: add mailserver

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Leon Schwarzäugl 2025-11-25 19:46:28 +01:00 • committed by Leon Schwarzäugl
parent 2cb67804d4
commit 732f4fbd00
12 changed files with 657 additions and 166 deletions
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115
modules/nixos/server/mailserver.nix Normal file
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{ lib, config, globals, dns, confLib, ... }:
let
inherit (config.swarselsystems) sopsFile;
inherit (confLib.gen { name = "mailserver"; dir = "/var/lib/dovecot"; user = "virtualMail"; group = "virtualMail"; port = 443; }) serviceName serviceDir servicePort serviceUser serviceGroup serviceDomain serviceProxy proxyAddress4 proxyAddress6;
inherit (config.repo.secrets.local.mailserver) user1 alias1_1 alias1_2 alias1_3 alias1_4 user2 alias2_1 user3;
baseDomain = globals.domains.main;
in
{
options = {
swarselmodules.server.${serviceName} = lib.mkEnableOption "enable ${serviceName} on server";
};
config = lib.mkIf config.swarselmodules.server.${serviceName} {
swarselsystems.server.dns.${globals.services.${serviceName}.baseDomain}.subdomainRecords = {
"${globals.services.${serviceName}.subDomain}" = dns.lib.combinators.host proxyAddress4 proxyAddress6;
};
globals.services.${serviceName} = {
domain = serviceDomain;
inherit proxyAddress4 proxyAddress6;
};
sops.secrets = {
user1-hashed-pw = { inherit sopsFile; owner = serviceUser; };
user2-hashed-pw = { inherit sopsFile; owner = serviceUser; };
user3-hashed-pw = { inherit sopsFile; owner = serviceUser; };
};
environment.persistence."/persist".directories = lib.mkIf config.swarselsystems.isImpermanence [
{ directory = "/var/vmail"; user = serviceUser; group = serviceGroup; mode = "0770"; }
{ directory = "/var/sieve"; user = serviceUser; group = serviceGroup; mode = "0770"; }
{ directory = "/var/dkim"; user = "rspamd"; group = "rspamd"; mode = "0700"; }
{ directory = serviceDir; user = serviceUser; group = serviceGroup; mode = "0700"; }
{ directory = "/var/lib/postgresql"; user = "postgres"; group = "postgres"; mode = "0750"; }
{ directory = "/var/lib/rspamd"; user = "rspamd"; group = "rspamd"; mode = "0700"; }
{ directory = "/var/lib/roundcube"; user = "roundcube"; group = "roundcube"; mode = "0700"; }
{ directory = "/var/lib/redis-rspamd"; user = "redis-rspamd"; group = "redis-rspamd"; mode = "0700"; }
{ directory = "/var/lib/postfix"; user = "root"; group = "root"; mode = "0755"; }
{ directory = "/var/lib/knot-resolver"; user = "knot-resolver"; group = "knot-resolver"; mode = "0770"; }
];
mailserver = {
enable = true;
stateVersion = 3;
fqdn = serviceDomain;
domains = [ baseDomain ];
indexDir = "${serviceDir}/indices";
openFirewall = true;
certificateScheme = "acme";
dmarcReporting.enable = true;
loginAccounts = {
"${user1}@${baseDomain}" = {
hashedPasswordFile = config.sops.secrets.user1-hashed-pw.path;
aliases = [
"${alias1_1}@${baseDomain}"
"${alias1_2}@${baseDomain}"
"${alias1_3}@${baseDomain}"
"${alias1_4}@${baseDomain}"
];
};
"${user2}@${baseDomain}" = {
hashedPasswordFile = config.sops.secrets.user2-hashed-pw.path;
aliases = [
"${alias2_1}@${baseDomain}"
];
sendOnly = true;
};
"${user3}@${baseDomain}" = {
hashedPasswordFile = config.sops.secrets.user3-hashed-pw.path;
aliases = [
"@${baseDomain}"
];
catchAll = [
baseDomain
];
};
};
};
services.roundcube = {
enable = true;
# this is the url of the vhost, not necessarily the same as the fqdn of
# the mailserver
hostName = serviceDomain;
extraConfig = ''
$config['imap_host'] = "ssl://${config.mailserver.fqdn}";
$config['smtp_host'] = "ssl://${config.mailserver.fqdn}";
$config['smtp_user'] = "%u";
$config['smtp_pass'] = "%p";
'';
configureNginx = true;
};
# the rest of the ports are managed by snm
networking.firewall.allowedTCPPorts = [ 80 servicePort ];
nodes.${serviceProxy}.services.nginx = {
virtualHosts = {
"${serviceDomain}" = {
enableACME = true;
forceSSL = true;
acmeRoot = null;
locations = {
"/".recommendedSecurityHeaders = false;
"~ ^/(SQL|bin|config|logs|temp|vendor)/".recommendedSecurityHeaders = false;
"~ ^/(CHANGELOG.md|INSTALL|LICENSE|README.md|SECURITY.md|UPGRADING|composer.json|composer.lock)".recommendedSecurityHeaders = false;
"~* \\.php(/|$)".recommendedSecurityHeaders = false;
};
};
};
};
};
}