Send mail through mailgun

machines/liza/configuration.nix

@@ -38,7 +38,6 @@
       "runyan.org" "runyan.rocks"
       "thunderhex.com" "tar.ninja"
       "bsd.ninja" "bsd.rocks"
-      "paradigminteractive.agency"
     ];
     loginAccounts = {
       "jeremy@runyan.org" = {
@@ -61,6 +60,31 @@
   };
   age.secrets.email-pw.file = ../../secrets/email-pw.age;
 
+  # relay sent mail through mailgun
+  # https://www.howtoforge.com/community/threads/different-smtp-relays-for-different-domains-in-postfix.82711/#post-392620
+  services.postfix.config = {
+    smtp_sasl_auth_enable = "yes";
+    smtp_sasl_security_options = "noanonymous";
+    smtp_sasl_password_maps = "hash:/var/lib/postfix/conf/sasl_relay_passwd";
+    smtp_use_tls = "yes";
+    sender_dependent_relayhost_maps = "hash:/var/lib/postfix/conf/sender_relay";
+  };
+  services.postfix.mapFiles.sender_relay = let
+    relayHost = "[smtp.mailgun.org]:587";
+  in pkgs.writeText "sender_relay" ''
+    @neet.space ${relayHost}
+    @neet.cloud ${relayHost}
+    @neet.dev ${relayHost}
+    @runyan.org ${relayHost}
+    @runyan.rocks ${relayHost}
+    @thunderhex.com ${relayHost}
+    @tar.ninja ${relayHost}
+    @bsd.ninja ${relayHost}
+    @bsd.rocks ${relayHost}
+  '';
+  services.postfix.mapFiles.sasl_relay_passwd = "/run/agenix/sasl_relay_passwd";
+  age.secrets.sasl_relay_passwd.file = ../../secrets/sasl_relay_passwd.age;
+
   services.nextcloud = {
     enable = true;
     https = true;

secrets/secrets.nix

@@ -18,4 +18,5 @@ in
   "wolframalpha.age".publicKeys = all;
   "cloudflared-navidrome.json.age".publicKeys = all;
   "smb-secrets.age".publicKeys = all;
+  "sasl_relay_passwd.age".publicKeys = all;
 }