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|
{extraModules}: {
config,
lib,
nodes,
pkgs,
...
}: let
keyAlgoToKeyType = keyAlgo:
if keyAlgo == "ed25519-sha256"
then "ed25519"
else if keyAlgo == "rsa-sha-256" || keyAlgo == "rsa-sha-1"
then "rsa"
else builtins.throw "Impossible";
mkZone = user: nodes: lib: cfg: {
SOA = {
nameServer = "ns.server.com";
adminEmail = "${user}@${user}.com";
serial = 2024012301;
};
MX = [
{
preference = 10;
exchange = "${cfg.fqdn}.";
}
];
# https://www.rfc-editor.org/rfc/rfc8461.html#section-3.1
# Also see the policy in the hmtl part.
MTA-STS = [
{
id = "20250228Z";
}
];
# https://www.rfc-editor.org/rfc/rfc7208.html
# https://en.wikipedia.org/wiki/Sender_Policy_Framework
TXT = [
(builtins.concatStringsSep " "
[
"v=spf1" # The version.
"+mx" # Allow mail from this domain MX record.
"-all" # Reject all other emails if the previous mechanism did not match.
])
];
# https://www.rfc-editor.org/rfc/rfc6376.html#section-3.6.1
# https://www.rfc-editor.org/rfc/rfc6376.html#section-7.5
DKIM = [
{
selector = "mail";
k = keyAlgoToKeyType cfg.security.dkimKeys."${user}.com".keyAlgorithm;
p = cfg.security.dkimKeys."${user}.com".dkimPublicKey;
s = ["email"];
t = ["s"];
}
];
# https://www.rfc-editor.org/rfc/rfc7489.html#section-6.3
DMARC = [
{
adkim = "strict";
aspf = "strict";
fo = ["0" "1" "d" "s"];
p = "quarantine";
rua = cfg.admin;
ruf = [cfg.admin];
}
];
A = [
nodes.${user}.networking.primaryIPAddress
];
AAAA = [
nodes.${user}.networking.primaryIPv6Address
];
};
mkServerZone = serverName: nodes: lib: let
cfg = nodes."${serverName}_server".vhack.stalwart-mail;
in {
SOA = {
nameServer = "ns.server.com";
adminEmail = "admin@server.com";
serial = 2024012301;
};
MX = [
{
preference = 10;
exchange = "${serverName}.server.com.";
}
];
# https://www.rfc-editor.org/rfc/rfc6376.html#section-3.6.1
# https://www.rfc-editor.org/rfc/rfc6376.html#section-7.5
DKIM = [
{
selector = "mail";
k = keyAlgoToKeyType cfg.security.dkimKeys."${serverName}.server.com".keyAlgorithm;
p = cfg.security.dkimKeys."${serverName}.server.com".dkimPublicKey;
s = ["email"];
t = ["s"];
}
];
# https://www.rfc-editor.org/rfc/rfc7489.html#section-6.3
DMARC = [
{
adkim = "strict";
aspf = "strict";
fo = ["0" "1" "d" "s"];
p = "quarantine";
rua = cfg.admin;
ruf = [cfg.admin];
}
];
# https://www.rfc-editor.org/rfc/rfc7208.html
# NOTE(@bpeetz): This server might not be directly sending mail, but it is still required for
# the SMTP EHLO check. <2025-02-25>
TXT = [
(builtins.concatStringsSep " "
[
"v=spf1" # The version.
"+mx" # Allow mail from this domain MX record.
"-all" # Reject all other emails if the previous mechanism did not match.
])
];
A = [
nodes."${serverName}_server".networking.primaryIPAddress
];
AAAA = [
nodes."${serverName}_server".networking.primaryIPv6Address
];
};
in {
imports =
extraModules
++ [
../../../../../modules
./acme/client.nix
];
networking.nameservers = lib.mkForce [
nodes.name_server.networking.primaryIPAddress
nodes.name_server.networking.primaryIPv6Address
];
services.nginx = {
logError = "stderr debug";
virtualHosts = let
mkStsHost = mx: {
forceSSL = true;
enableACME = true;
root = pkgs.runCommandLocal "mkPolicy" {} ''
mkdir --parents $out/.well-known/
# https://www.rfc-editor.org/rfc/rfc8461.html#section-3.2
cat << EOF > $out/.well-known/mta-sts.txt
version: STSv1
mode: enforce
mx: ${mx}
max_age: 604800
EOF
'';
};
in {
"mta-sts.alice.com" = mkStsHost "mail2.server.com";
"mta-sts.bob.com" = mkStsHost "mail1.server.com";
};
};
vhack = {
nginx = {
enable = true;
};
dns = {
enable = true;
openFirewall = true;
interfaces = [
nodes.name_server.networking.primaryIPAddress
nodes.name_server.networking.primaryIPv6Address
];
zones = let
stsZone = {
SOA = {
nameServer = "ns";
adminEmail = "admin@server.com";
serial = 2025012301;
};
useOrigin = false;
A = [
nodes.name_server.networking.primaryIPAddress
];
AAAA = [
nodes.name_server.networking.primaryIPv6Address
];
};
in {
"arpa" = {
SOA = {
nameServer = "ns";
adminEmail = "admin@server.com";
serial = 2025012301;
};
useOrigin = false;
PTR = [
{
name = "acme.test";
ip.v4 = nodes.acme.networking.primaryIPAddress;
}
{
name = "acme.test";
ip.v6 = nodes.acme.networking.primaryIPv6Address;
}
{
name = "alice.com";
ip.v4 = nodes.alice.networking.primaryIPAddress;
}
{
name = "alice.com";
ip.v6 = nodes.alice.networking.primaryIPv6Address;
}
{
name = "bob";
ip.v4 = nodes.bob.networking.primaryIPAddress;
}
{
name = "bob";
ip.v6 = nodes.bob.networking.primaryIPv6Address;
}
{
name = "mail1.server.com";
ip.v4 = nodes.mail1_server.networking.primaryIPAddress;
}
{
name = "mail1.server.com";
ip.v6 = nodes.mail1_server.networking.primaryIPv6Address;
}
{
name = "mail2.server.com";
ip.v4 = nodes.mail2_server.networking.primaryIPAddress;
}
{
name = "mail2.server.com";
ip.v6 = nodes.mail2_server.networking.primaryIPv6Address;
}
{
name = "ns.server.com";
ip.v4 = nodes.name_server.networking.primaryIPAddress;
}
{
name = "ns.server.com";
ip.v6 = nodes.name_server.networking.primaryIPv6Address;
}
];
};
"alice.com" = mkZone "alice" nodes lib nodes.mail2_server.vhack.stalwart-mail;
"mta-sts.alice.com" = stsZone;
"bob.com" = mkZone "bob" nodes lib nodes.mail1_server.vhack.stalwart-mail;
"mta-sts.bob.com" = stsZone;
"mail1.server.com" = mkServerZone "mail1" nodes lib;
"mail2.server.com" = mkServerZone "mail2" nodes lib;
"ns.server.com" = {
SOA = {
nameServer = "ns";
adminEmail = "admin@server.com";
serial = 2025012301;
};
useOrigin = false;
A = [
nodes.name_server.networking.primaryIPAddress
];
AAAA = [
nodes.name_server.networking.primaryIPv6Address
];
};
"acme.test" = {
SOA = {
nameServer = "ns";
adminEmail = "admin@server.com";
serial = 2025012301;
};
useOrigin = false;
A = [
nodes.acme.networking.primaryIPAddress
];
AAAA = [
nodes.acme.networking.primaryIPv6Address
];
};
"server.com" = {
SOA = {
nameServer = "ns";
adminEmail = "admin@server.com";
serial = 2025012301;
};
useOrigin = false;
NS = [
"ns.server.com."
];
};
};
};
};
}
|
