6 files changed, 147 insertions, 86 deletions

diff --git a/hosts/sif/default.nix b/hosts/sif/default.nix
index b50cad60..6214569a 100644
--- a/hosts/sif/default.nix
+++ b/hosts/sif/default.nix
@@ -12,7 +12,7 @@ let
 in {
   imports = with flake.nixosModules.systemProfiles; [
     ./hw.nix
-    ./mail ./libvirt ./greetd
+    ./email ./libvirt ./greetd
     tmpfs-root bcachefs initrd-all-crypto-modules default-locale openssh rebuild-machines niri-unstable networkmanager
     flakeInputs.nixos-hardware.nixosModules.lenovo-thinkpad-p1
     flakeInputs.impermanence.nixosModules.impermanence
@@ -130,6 +130,12 @@ in {
       useNetworkd = true;
     };
 
+    environment.etc."NetworkManager/dnsmasq.d/dnssec.conf" = {
+      text = ''
+        conf-file=${pkgs.dnsmasq}/share/dnsmasq/trust-anchors.conf
+        dnssec
+      '';
+    };
     environment.etc."NetworkManager/dnsmasq.d/libvirt_dnsmasq.conf" = {
       text = ''
         except-interface=virbr0
@@ -372,19 +378,6 @@ in {
     ];
 
     services = {
-      uucp = {
-        enable = true;
-        nodeName = "sif";
-        remoteNodes = {
-          "ymir" = {
-            publicKeys = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG6KNtsCOl5fsZ4rV7udTulGMphJweLBoKapzerWNoLY root@ymir"];
-            hostnames = ["ymir.yggdrasil.li" "ymir.niflheim.yggdrasil"];
-          };
-        };
-
-        defaultCommands = lib.mkForce [];
-      };
-
       avahi.enable = true;
 
       fwupd.enable = true;
@@ -680,8 +673,6 @@ in {
         "/var/lib/upower"
         "/var/lib/postfix"
         "/etc/NetworkManager/system-connections"
-        { directory = "/var/uucp"; user = "uucp"; group = "uucp"; mode = "0700"; }
-        { directory = "/var/spool/uucp"; user = "uucp"; group = "uucp"; mode = "0750"; }
       ];
       files = [
       ];
diff --git a/hosts/sif/email/default.nix b/hosts/sif/email/default.nix
new file mode 100644
index 00000000..4eda236e
--- /dev/null
+++ b/hosts/sif/email/default.nix
@@ -0,0 +1,110 @@
+{ config, lib, pkgs, ... }:
+{
+  services.postfix = {
+    enable = true;
+    enableSmtp = false;
+    enableSubmission = false;
+    setSendmail = true;
+    networksStyle = "host";
+    hostname = "sif.midgard.yggdrasil";
+    destination = [];
+    recipientDelimiter = "+";
+    config = {
+      mydomain = "yggdrasil.li";
+
+      local_transport = "error:5.1.1 No local delivery";
+      alias_database = [];
+      alias_maps = [];
+      local_recipient_maps = [];
+
+      inet_interfaces = "loopback-only";
+
+      message_size_limit = "0";
+
+      authorized_submit_users = "inline:{ gkleen= }";
+      authorized_flush_users = "inline:{ gkleen= }";
+      authorized_mailq_users = "inline:{ gkleen= }";
+
+      smtp_generic_maps = "inline:{ root=root+sif }";
+
+      mynetworks = ["127.0.0.0/8" "[::1]/128"];
+      smtpd_client_restrictions = ["permit_mynetworks" "reject"];
+      smtpd_relay_restrictions = ["permit_mynetworks" "reject"];
+
+      sender_dependent_default_transport_maps = ''regexp:${pkgs.writeText "sender_relay" ''
+        /@(cip|stud)\.ifi\.(lmu|uni-muenchen)\.de$/ smtp:smtp.ifi.lmu.de
+        /@ifi\.(lmu|uni-muenchen)\.de$/ smtp:smtpin1.ifi.lmu.de:587
+        /@math(ematik)?\.(lmu|uni-muenchen)\.de$/ smtps:smtp.math.lmu.de:465
+        /@(campus\.)?lmu\.de$/ smtp:postout.lrz.de
+      ''}'';
+      sender_bcc_maps = ''regexp:${pkgs.writeText "sender_bcc" ''
+        /^uni2work(-[^@]*)?@ifi\.lmu\.de$/ uni2work@ifi.lmu.de
+        /@ifi\.lmu\.de$/ gregor.kleen@ifi.lmu.de
+      ''}'';
+      relayhost = "[surtr.yggdrasil.li]:465";
+      default_transport = "relay";
+
+      smtp_sasl_auth_enable = true;
+      smtp_sender_dependent_authentication = true;
+      smtp_sasl_tls_security_options = "noanonymous";
+      smtp_sasl_mechanism_filter = ["plain"];
+      smtp_sasl_password_maps = "regexp:/run/credentials/postfix.service/sasl_passwd";
+      smtp_cname_overrides_servername = false;
+      smtp_always_send_ehlo = true;
+      smtp_tls_security_level = "dane";
+
+      smtp_tls_loglevel = "1";
+      smtp_dns_support_level = "dnssec";
+    };
+    masterConfig = {
+      submission = {
+        type = "inet";
+        private = false;
+        command = "smtpd";
+        args = [
+          "-o" "syslog_name=postfix/$service_name"
+        ];
+      };
+      smtp = { };
+      smtps = {
+        type = "unix";
+        private = true;
+        privileged = true;
+        chroot = false;
+        command = "smtp";
+        args = [
+          "-o" "smtp_tls_wrappermode=yes"
+          "-o" "smtp_tls_security_level=encrypt"
+        ];
+      };
+      relay = {
+        command = "smtp";
+        args = [
+          "-o" "smtp_fallback_relay="
+          "-o" "smtp_tls_security_level=verify"
+          "-o" "smtp_tls_wrappermode=yes"
+          "-o" "smtp_tls_cert_file=${./relay.crt}"
+          "-o" "smtp_tls_key_file=/run/credentials/postfix.service/relay.key"
+        ];
+      };
+    };
+  };
+
+  systemd.services.postfix = {
+    serviceConfig.LoadCredential = [
+      "sasl_passwd:${config.sops.secrets."postfix-sasl-passwd".path}"
+      "relay.key:${config.sops.secrets."relay-key".path}"
+    ];
+  };
+
+  sops.secrets = {
+    postfix-sasl-passwd = {
+      key = "sasl-passwd";
+      sopsFile = ./secrets.yaml;
+    };
+    relay-key = {
+      format = "binary";
+      sopsFile = ./relay.key;
+    };
+  };
+}
diff --git a/hosts/sif/email/relay.crt b/hosts/sif/email/relay.crt
new file mode 100644
index 00000000..ac13e7cb
--- /dev/null
+++ b/hosts/sif/email/relay.crt
@@ -0,0 +1,11 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/hosts/sif/email/relay.key b/hosts/sif/email/relay.key
new file mode 100644
index 00000000..412a44e0
--- /dev/null
+++ b/hosts/sif/email/relay.key
@@ -0,0 +1,19 @@
+{
+        "data": "ENC[AES256_GCM,data:lBlTuzOS75pvRmcTKT4KhHMH44RlE2SvCFAUP+GfsXws1Uai7DZ1MmbhvxxCa+pcLW19+sQYxrXLRNZWby1yOeKBJ2UQeYV5LOk9LSL/WIE3FZkCo5Dv0O0gSFKjjb61WN22a4JnHbLWADf/mLT3GZv91XfvFDo=,iv:ho8wQH3UNzX9JPW5gVcUGtxZzdVwsMFus0Z4KYe5t48=,tag:dAgZyHOva2xVVhE1nTl+lg==,type:str]",
+        "sops": {
+                "age": [
+                        {
+                                "recipient": "age1rmmhetcmllq0ahl5qznlr0eya2zdxwl9h6y5wnl97d2wtyx5t99sm2u866",
+                                "enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB6eTVRSUdFNUZGZmcxSUlT\nWmlsOGNyWXIzMGNTZjlKbXlhcEdZUXFRVkR3Cll0T0RMd0h2UW16QkR3SHlhYmNZ\nNDFrYXh3Rkp5NWsvcWc3UFJJaHVwT1UKLS0tIHhXVEI0VHBZVkpDQ1FzWENjMmJH\nb1FQWXVUUTBiZ1pKWG00MTNqVEo2SjAKK3VOU+QgRuxWYWEcrJiVMRFCprBICz4F\ngD+9zuPUzPezyJkYwTs+M+wX5GYkXppqm5W58yQLS2UDD38sr+SRjg==\n-----END AGE ENCRYPTED FILE-----\n"
+                        },
+                        {
+                                "recipient": "age1fj65apkhfkrwyv5tx6zcs9nkjg8267fy733qph30sc7zfn7vapjqkd5kne",
+                                "enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBzWmJmZDVFazN2bDY1TkNG\nNXpJN2twMFFjZUxMTVdSNzJwQTFiYktrcGdrCjk4eFVHTko0bFVMSlFFWm9tbjMr\nbWNHMEQ1Rm1qUVhodlB1RGw2aDc4TUEKLS0tIERBK0J5NkN4OXJEZ1ZOZXhNc1Jm\naWNnUmZGbTIxdmNkYi9TZ2h2bGs3MVEKPQGaEf7M/5/xvSOfawpIp50fB3QfFSuz\nPgkrPMneaBeUx+uBYMyEFX4rpzLIBR3pnYMjAfoc+bjWaOtGQuEqyQ==\n-----END AGE ENCRYPTED FILE-----\n"
+                        }
+                ],
+                "lastmodified": "2025-04-25T12:14:44Z",
+                "mac": "ENC[AES256_GCM,data:pObl2bJA93az9E3Ya+hA3ekI8TKKZ9NNTi0KzmWZBOiQwi9FuQYtpnmmT80L1KXWyOKJV6wGdAri3mNe/ue2S0TziSbQ/4+Dj4ubFKgkH7thb5q2dFyxw5FzhYzRQiXFqD/pxcNN9uL0lQI2Al0Eci0zX8Kcd1rAQ6RzLEoSmco=,iv:zo/3QFKTUEDxLy1k5yyU7Z1JMZ7cKdYUc6GHjaTTZKQ=,tag:f63Eja3lBfwJCYAOyEt56g==,type:str]",
+                "unencrypted_suffix": "_unencrypted",
+                "version": "3.10.2"
+        }
+}
diff --git a/hosts/sif/mail/secrets.yaml b/hosts/sif/email/secrets.yaml
index 3c74b710..3c74b710 100644
--- a/hosts/sif/mail/secrets.yaml
+++ b/hosts/sif/email/secrets.yaml
diff --git a/hosts/sif/mail/default.nix b/hosts/sif/mail/default.nix
deleted file mode 100644
index 8d6cd705..00000000
--- a/hosts/sif/mail/default.nix
+++ /dev/null
@@ -1,70 +0,0 @@
-{ config, lib, pkgs, ... }:
-{
-  services.postfix = {
-    enable = true;
-    enableSmtp = true;
-    enableSubmission = false;
-    setSendmail = true;
-    networksStyle = "host";
-    hostname = "sif.midgard.yggdrasil";
-    destination = [];
-    relayHost = "uucp:ymir";
-    recipientDelimiter = "+";
-    masterConfig = {
-      uucp = {
-        type = "unix";
-        private = true;
-        privileged = true;
-        chroot = false;
-        command = "pipe";
-        args = [ "flags=Fqhu" "user=uucp" ''argv=${config.security.wrapperDir}/uux -z -a $sender - $nexthop!rmail ($recipient)'' ];
-      };
-      smtps = {
-        type = "unix";
-        private = true;
-        privileged = true;
-        chroot = false;
-        command = "smtp";
-        args = [ "-o" "smtp_tls_wrappermode=yes" "-o" "smtp_tls_security_level=encrypt" ];
-      };
-    };
-    config = {
-      default_transport = "uucp:ymir";
-
-      inet_interfaces = "loopback-only";
-
-      authorized_submit_users = ["!uucp" "static:anyone"];
-      message_size_limit = "0";
-
-      sender_dependent_default_transport_maps = ''regexp:${pkgs.writeText "sender_relay" ''
-        /@(cip|stud)\.ifi\.(lmu|uni-muenchen)\.de$/ smtp:smtp.ifi.lmu.de
-        /@ifi\.(lmu|uni-muenchen)\.de$/ smtp:smtpin1.ifi.lmu.de:587
-        /@math(ematik)?\.(lmu|uni-muenchen)\.de$/ smtps:smtp.math.lmu.de:465
-        /@(campus\.)?lmu\.de$/ smtp:postout.lrz.de
-      ''}'';
-      sender_bcc_maps = ''regexp:${pkgs.writeText "sender_bcc" ''
-        /^uni2work(-[^@]*)?@ifi\.lmu\.de$/ uni2work@ifi.lmu.de
-        /@ifi\.lmu\.de$/ gregor.kleen@ifi.lmu.de
-      ''}'';
-
-      smtp_sasl_auth_enable = true;
-      smtp_sender_dependent_authentication = true;
-      smtp_sasl_tls_security_options = "noanonymous";
-      smtp_sasl_mechanism_filter = ["plain"];
-      smtp_sasl_password_maps = "regexp:/var/db/postfix/sasl_passwd";
-      smtp_cname_overrides_servername = false;
-      smtp_always_send_ehlo = true;
-      smtp_tls_security_level = "dane";
-
-      smtp_tls_loglevel = "1";
-      smtp_dns_support_level = "dnssec";
-    };
-  };
-
-  sops.secrets.postfix-sasl-passwd = {
-    key = "sasl-passwd";
-    path = "/var/db/postfix/sasl_passwd";
-    owner = "postfix";
-    sopsFile = ./secrets.yaml;
-  };
-}