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[perso/Immae/Config/Nix.git] / modules / private / dns.nix

diff --git a/modules/private/dns.nix b/modules/private/dns.nix
index f12f9822664ad46361e6c9e66ef761295b5ea9b7..b4772fcde9f20d5a5d00669abf80e0c11bef4bc2 100644 (file)
--- a/modules/private/dns.nix
+++ b/modules/private/dns.nix
@@ -1,5 +1,6 @@
 { lib, pkgs, config, myconfig,  ... }:
 {
+  options.myServices.dns.enable = lib.mkEnableOption "enable DNS resolver";
   config = let
     cfg = config.services.bind;
     configFile = pkgs.writeText "named.conf" ''
@@ -49,8 +50,7 @@
             '')
           cfg.zones }
     '';
-  in
-    {
+  in lib.mkIf config.myServices.dns.enable {
     networking.firewall.allowedUDPPorts = [ 53 ];
     networking.firewall.allowedTCPPorts = [ 53 ];
     services.bind = {
@@ -94,10 +94,10 @@
               ${conf.entries}
 
               ${if lib.attrsets.hasAttr "withEmail" conf && lib.lists.length conf.withEmail > 0 then ''
-              mail IN A     ${myconfig.env.servers.immaeEu.ips.main.ip4}
               mx-1 IN A     ${myconfig.env.servers.eldiron.ips.main.ip4}
-              ${builtins.concatStringsSep "\n" (map (i: "mail IN AAAA  ${i}") myconfig.env.servers.immaeEu.ips.main.ip6)}
+              mx-2 IN A     ${myconfig.env.servers.immaeEu.ips.main.ip4}
               ${builtins.concatStringsSep "\n" (map (i: "mx-1 IN AAAA  ${i}") myconfig.env.servers.eldiron.ips.main.ip6)}
+              ${builtins.concatStringsSep "\n" (map (i: "mx-2 IN AAAA  ${i}") myconfig.env.servers.immaeEu.ips.main.ip6)}
               ${lib.concatStringsSep "\n\n" (map (e:
               let
                 n = if e.domain == "" then "@" else "${e.domain}  ";
@@ -105,16 +105,25 @@
               in
               ''
               ; ------------------ mail: ${n} ---------------------------
-              ${n} IN MX 10 mail.${conf.name}.
-              ;${n} IN MX 50 mx-1.${conf.name}.
+              ${n} IN MX 10 mx-1.${conf.name}.
+              ${n} IN MX 20 mx-2.${conf.name}.
 
               ; https://tools.ietf.org/html/rfc6186
-              _submission._tcp${suffix} SRV  0 1  587 smtp.immae.eu.
-              _imap._tcp${suffix}       SRV  0 1  143 imap.immae.eu.
-              _imaps._tcp${suffix}      SRV  0 1  993 imap.immae.eu.
-              _pop3._tcp${suffix}       SRV 10 1  110 pop3.immae.eu.
-              _pop3s._tcp${suffix}      SRV 10 1  995 pop3.immae.eu.
-              _sieve._tcp${suffix}      SRV  0 1 4190 imap.immae.eu.
+              _submission._tcp${suffix}  SRV  0 1  587 smtp.immae.eu.
+              _submissions._tcp${suffix} SRV  0 1  465 smtp.immae.eu.
+              _imap._tcp${suffix}        SRV  0 1  143 imap.immae.eu.
+              _imaps._tcp${suffix}       SRV  0 1  993 imap.immae.eu.
+              _pop3._tcp${suffix}        SRV 10 1  110 pop3.immae.eu.
+              _pop3s._tcp${suffix}       SRV 10 1  995 pop3.immae.eu.
+              _sieve._tcp${suffix}       SRV  0 1 4190 imap.immae.eu.
+
+              ; MTA-STS
+              ; https://blog.delouw.ch/2018/12/16/using-mta-sts-to-enhance-email-transport-security-and-privacy/
+              ; https://support.google.com/a/answer/9261504
+              _mta-sts${suffix}   IN TXT  "v=STSv1;id=20190630054629Z"
+              _smtp._tls${suffix} IN TXT  "v=TLSRPTv1;rua=mailto:postmaster+mta-sts@immae.eu"
+              mta-sts${suffix}    IN A    ${myconfig.env.servers.eldiron.ips.main.ip4}
+              ${builtins.concatStringsSep "\n" (map (i: "mta-sts${suffix}    IN AAAA ${i}") myconfig.env.servers.eldiron.ips.main.ip6)}
 
               ; Mail sender authentications
               ${n}                   IN TXT  "v=spf1 mx ~all"