1 files changed, 66 insertions, 0 deletions

diff --git a/hosts/sif/mail/default.nix b/hosts/sif/mail/default.nix
new file mode 100644
index 00000000..29bfb4f1
--- /dev/null
+++ b/hosts/sif/mail/default.nix
@@ -0,0 +1,66 @@
+{ config, 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)'' ];
+      };
+    };
+    transport = ''
+      odin.asgard.yggdrasil uucp:odin
+    '';
+    config = {
+      always_bcc = "gkleen+sent@odin.asgard.yggdrasil";
+
+      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$/ smtp:smtpin1.ifi.lmu.de:587
+        /@(campus\.)?lmu\.de$/ 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;
+  };
+}