mail #2
9 changed files with 337 additions and 6 deletions
10
mapping.nix
10
mapping.nix
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@ -26,4 +26,14 @@
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./shared/dns.nix
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];
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};
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mail = {
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hosts = [
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"mail-mtz-lasuite-federez"
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"mail-ren-lasuite-federez"
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];
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_inherit = [
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./shared/mail.nix
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];
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};
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}
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16
secrets/dns/challenge.age
Normal file
16
secrets/dns/challenge.age
Normal file
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@ -0,0 +1,16 @@
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age-encryption.org/v1
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-> ssh-ed25519 VQDASQ mK2dVgCVFtLPW3eaRemGvmV8XRCXjvlWgh3CyEP/HRs
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Iv49IVQqzO14ggd3yqTbjEzEhWxLlxdeXEKATO6i3sE
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-> ssh-ed25519 PV+Tsg vuk/IMPh7O6erZ4/lWAAeVQODnMFFIOrfY0fLOXT6Sk
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B13BqD51YsPppMEJRnApEQ4N20YWSzHLv3YOGvXpERE
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-> ssh-ed25519 Ecp4NA medZ8WVt4uwDLfFtxnpGbbBwP/JZQlWoHYfbuDtb0Us
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JjKUAZUMYK4vXaS6QFVZVKoQO+zO7+kUyJGXC050yvE
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-> ssh-ed25519 vHebMw FkWAklfnd60izhTwSPkmBZqMawBgcmG3p4xWhcUFElc
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1TBv5EfHjaJFY/7kpDt7MBBB/svS2zqlNw3/4HkDxfk
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-> ssh-ed25519 um7xWA lcSH23MCgWy3YevbzzZeOI9S7U1uzOwJvSagskSyl2k
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7BoMoGFVx/I6P6kQE0Ku4wXMASCIdioX19n9BOlEoNM
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-> ssh-ed25519 oRtTqQ QRA+pNeSutaGDIE1Ov2e6z/6/zwWnhhN+iTQoABvWgc
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gTxHrYwKwr6sQXA5ySKWav8+IYxw+NN+54q+3fc6C4I
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--- qrDkUs3UczTG7EDiOxbULZQ8+O4aAP6J6a6ys2tuyjI
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t<02>‹zO êb3ãÿì<C3BF> ¸¾Ò'ÍW7bôš,Uo *<2A>ßZ%;ÆÊ–Ý?F· © {ùÂMôNg:šênEXᢗz•— óÜÆ\Îr¹-
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ð¹Ð <05>5«ðýáìC²N¡˜ Ð7ræ^ÜòMgÀ> }£ËmÞÖ<C39E>Ã`±°‘
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16
secrets/mail/mbox/test.age
Normal file
16
secrets/mail/mbox/test.age
Normal file
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@ -0,0 +1,16 @@
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age-encryption.org/v1
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-> ssh-ed25519 VQDASQ iTY4Dv+Hhxdd7XBliAhAKvPvm96cZcKOqkbC1/PPZEA
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buKTlrIQwx2O6dw0PO2U20dYwHfyjvb99IVp9xAKmCc
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-> ssh-ed25519 PV+Tsg fEV9Wshu13hi5+GNCgQM8p9JSFm3N7vhZENxEXBdqWM
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uXyz+OfdsLV4PEwjErBIR46cEzp4wYyB/q2XtIgh8ic
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-> ssh-ed25519 Ecp4NA oaBz9Yd6fgz3wqf85RR1+m45Rj61t1OOiJ3J92WCsx8
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4XSBmWE7VlkcvmProSMN1YJ67I2c2VDDZz46QYEiUVI
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-> ssh-ed25519 vHebMw ngxp3WhtYOOCUdmqK3PUqVv94iSzQkcXwTkugQ6mzBI
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PNZZbo9nXJmpe2ajwn8KQ101zP71bfcYNd3FdCS/+Fs
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-> ssh-ed25519 um7xWA ukb8EQy2ksckyJI6XAPviKdiFj+KdiW2uyKo8W+ZV1k
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62WU+yOy322tDkuodVdq7405lt+PlUMCOEom3/0JbR0
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-> ssh-ed25519 oRtTqQ liDAk9KgFQLzcNDa+EKeLMoXHJoc1UnPrhSd7iPWDgo
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0x/LIAuRb4f5ebWREJc5XwP2UmObNlaQAR1s0vW1WH4
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--- +Mt/wbUkihs5CGurWGR2IWjolm2APznuFHs7tUR+teY
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á(/wr\Ü<>à
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<EFBFBD>YyÔÓ<EFBFBD>¥Ö¯Mðª?<3F>Í#>Îg€fMÇ xÛ“F7¹õ«™‹L?Â_KĈŠâKn`‚œÿ/Pþ¼ì9üGbxAN
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@ -97,8 +97,11 @@ in
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# DNS secrets
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"dns/tsig.age".publicKeys = system-dns ++ users;
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# This is the secret of the tsig key isolated, if the tsig.age is modified, this one should be updated accordingly
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"dns/challenge.age".publicKeys = system-mail ++ users;
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# Mail secrets
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"mail/dkim.age".publicKeys = system-mail ++ users;
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"mail/mbox/test.age".publicKeys = system-mail ++ users;
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}
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@ -65,6 +65,14 @@ in
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udp dport 53 accept
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'' else ""}
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${if lib.elem myName mapping.mail.hosts then ''
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# Mail server (without IMAP)
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# With support for both SSL & STARTTLS
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tcp dport 25 accept
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tcp dport 465 accept
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tcp dport 587 accept
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'' else ""}
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# Log anything else
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ip protocol tcp counter log prefix "tcp.in.dropped: "
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ip protocol udp counter log prefix "udp.in.dropped: "
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@ -94,7 +94,20 @@ let
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toNSRecord = host: "\tIN NS ${hostToDomain host}.net.";
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nsRecords = map toNSRecord mapping.dns.secondary;
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# Gen MX
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toMXRecord = host: "\tIN MX 10 ${hostToDomain host}.net.";
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mxRecords = map toMXRecord mapping.mail.hosts;
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dnsSecondaryConfigs = lib.filterAttrs (peerName: _peerConfig: lib.elem peerName mapping.dns.secondary) nodes;
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mailConfigs = lib.filterAttrs (peerName: _peerConfig: lib.elem peerName mapping.mail.hosts) nodes;
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# For now lasuite.federez.net will redirect to mail server
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soaARecords = lib.flatten (lib.mapAttrsToList (hostname: node:
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lib.optional (supportsIPv4 node) "\tIN A ${rmCidr node.ip4}"
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) mailConfigs);
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soaAAAARecords = lib.flatten (lib.mapAttrsToList (hostname: node:
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lib.optional (supportsIPv6 node) "\tIN AAAA ${rmCidr node.ip6}"
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) mailConfigs);
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# Gen A NS
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nsARecords = lib.flatten (lib.mapAttrsToList (hostname: node:
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@ -106,6 +119,16 @@ let
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lib.optional (supportsIPv6 node) "${hostToDomain hostname}.net. IN AAAA ${rmCidr node.ip6}"
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) dnsSecondaryConfigs);
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# Gen A MX
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mxARecords = lib.flatten (lib.mapAttrsToList (hostname: node:
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lib.optional (supportsIPv4 node) "${hostToDomain hostname}.net. IN A ${rmCidr node.ip4}"
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) mailConfigs);
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# Gen AAAA MX
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mxAAAARecords = lib.flatten (lib.mapAttrsToList (hostname: node:
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lib.optional (supportsIPv6 node) "${hostToDomain hostname}.net. IN AAAA ${rmCidr node.ip6}"
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) mailConfigs);
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# Gen A records for lf zone
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lfARecords = lib.flatten (lib.mapAttrsToList (hostname: node:
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"${hostToLfDomain hostname} IN A 172.19.${toString node.zone}.${toString node.id}"
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@ -120,34 +143,48 @@ let
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firstNS = builtins.head mapping.dns.secondary;
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firstNSDn = "${hostToDomain firstNS}.net.";
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# Generate SPF record with all mail server IPs
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spfIpv4Records = lib.flatten (lib.mapAttrsToList (hostname: node:
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lib.optional (supportsIPv4 node) "ip4:${rmCidr node.ip4}"
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) mailConfigs);
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spfIpv6Records = lib.flatten (lib.mapAttrsToList (hostname: node:
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lib.optional (supportsIPv6 node) "ip6:${rmCidr node.ip6}"
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) mailConfigs);
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spfRecord = "v=spf1 a:lasuite.federez.net ${builtins.concatStringsSep " " (spfIpv4Records ++ spfIpv6Records)} ~all";
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# Zone conf
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zone-lasuite-federez-net = pkgs.writeText "zone-lasuite-federez-net" ''
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$ORIGIN lasuite.federez.net.
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$TTL 60
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@ IN SOA ${firstNSDn} monitoring.lasuite.federez.net. (
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@ IN SOA ${firstNSDn} monitoring.federez.net. (
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2025072701 ; serial
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60 ; refresh
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60 ; retry
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60 ; expire
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60 ) ; minimum TTL
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IN TXT "v=spf1 a:lasuite.federez.net ~all"
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IN TXT "${spfRecord}"
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${builtins.concatStringsSep "\n" nsRecords}
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${builtins.concatStringsSep "\n" mxRecords}
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${builtins.concatStringsSep "\n" soaARecords}
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${builtins.concatStringsSep "\n" soaAAAARecords}
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${builtins.concatStringsSep "\n" nsARecords}
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${builtins.concatStringsSep "\n" nsAAAARecords}
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${builtins.concatStringsSep "\n" mxARecords}
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${builtins.concatStringsSep "\n" mxAAAARecords}
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_dmarc IN TXT "v=DMARC1; p=quarantine; ruf=mailto:postmaster@lasuite.federez.net"
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_dmarc IN TXT "v=DMARC1; p=quarantine; ruf=mailto:monitoring@federez.net"
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_mta-sts IN TXT "v=STSv1; id=1"
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_smtp._tls IN TXT "v=TLSRPTv1;rua=mailto:postmaster@lasuite.federez.net"
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_smtp._tls IN TXT "v=TLSRPTv1;rua=mailto:monitoring@federez.net"
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default._domainkey IN TXT "${lib.concatStringsSep "\" \"" domainkeySplitted}"
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'';
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zone-lf = pkgs.writeText "zone-lf" ''
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$ORIGIN lf.
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$TTL 60
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@ IN SOA dns.lf. monitoring.lasuite.federez.net. (
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@ IN SOA dns.lf. monitoring.federez.net. (
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2025072701 ; serial
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60 ; refresh
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60 ; retry
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14
shared/mail.nix
Normal file
14
shared/mail.nix
Normal file
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@ -0,0 +1,14 @@
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{ ... }:
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let
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ensureAccountsWithoutIMAP = [
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"test@lasuite.federez.net"
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];
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in
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{
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# Import dependencies
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imports = [
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./mail/maddy.nix
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];
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_module.args.ensureAccountsWithoutIMAP = ensureAccountsWithoutIMAP;
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}
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226
shared/mail/maddy.nix
Normal file
226
shared/mail/maddy.nix
Normal file
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@ -0,0 +1,226 @@
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{ config, lib, pkgs, ensureAccountsWithoutIMAP, ... }:
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let
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# Import nodes
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nodes = import ./../../nodes.nix;
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myName = config.hostName;
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myNode = nodes."${myName}";
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# And mapping
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mapping = import ./../../mapping.nix;
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acct = ensureAccountsWithoutIMAP;
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generatedCredsCommand = mbox: ''
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${pkgs.maddy}/bin/maddyctl creds remove --yes ${mbox}
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${pkgs.maddy}/bin/maddyctl creds create --password $(cat ${config.age.secrets."mbox-${builtins.head (builtins.split "@" mbox)}".path}) ${mbox}
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'';
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maddyDeployCreds = pkgs.writeShellScriptBin "maddyDeployCreds" ''
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${builtins.concatStringsSep "\n" (map generatedCredsCommand acct)}
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'';
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hostToDomain = hostname: "${builtins.replaceStrings ["-"] ["."] hostname}.net";
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buildSecret = mbox: {
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"mbox-${builtins.head (builtins.split "@" mbox)}" = {
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file = ./../../secrets/mail/mbox + ( "/" + builtins.head (builtins.split "@" mbox) + ".age" );
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owner = "maddy";
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group = "maddy";
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};
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};
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generatedSecrets = lib.foldl' (acc: mbox: acc // buildSecret mbox) {} acct;
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in
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{
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age.secrets = generatedSecrets // {
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"challenge" = {
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file = ./../../secrets/dns/challenge.age;
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owner = "acme";
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group = "acme";
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};
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"dkim-keys" = {
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file = ./../../secrets/mail/dkim.age;
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mode = "440";
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owner = "maddy";
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group = "maddy";
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};
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};
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services.maddy = {
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enable = true;
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hostname = "lasuite.federez.net";
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user = "maddy";
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group = "maddy";
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primaryDomain = "lasuite.federez.net";
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tls = {
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loader = "file";
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certificates = [{
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keyPath = "/var/lib/acme/lasuite.federez.net/key.pem";
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certPath = "/var/lib/acme/lasuite.federez.net/fullchain.pem";
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}];
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extraConfig = ''
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protocols tls1.0 tls1.3
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'';
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};
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config = ''
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auth.pass_table local_authdb {
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table sql_table {
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driver sqlite3
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dsn credentials.db
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table_name passwords
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}
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}
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table.chain local_rewrites {
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optional_step regexp "(.+)\+(.+)@(.+)" "$1@$3"
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optional_step static {
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entry postmaster postmaster@$(primary_domain)
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}
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optional_step file /etc/maddy/aliases
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}
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msgpipeline local_routing {
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default_destination {
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reject 550 5.1.1 "We don't accept incoming email on lasuite.federez.net, please use federez.net ml"
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}
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}
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smtp tcp://0.0.0.0:25 {
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limits {
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all rate 20 1s
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all concurrency 10
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}
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dmarc yes
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check {
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require_mx_record
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dkim
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spf
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}
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source $(local_domains) {
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reject 501 5.1.8 "Use Submission for outgoing SMTP"
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}
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default_source {
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destination postmaster $(local_domains) {
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deliver_to &local_routing
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}
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default_destination {
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reject 550 5.1.1 "User doesn't exist"
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}
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}
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}
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submission tls://0.0.0.0:465 tcp://0.0.0.0:587 {
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limits {
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all rate 50 1s
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}
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auth &local_authdb
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source $(local_domains) {
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check {
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authorize_sender {
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prepare_email &local_rewrites
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user_to_email identity
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}
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}
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destination postmaster $(local_domains) {
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deliver_to &local_routing
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}
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default_destination {
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modify {
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dkim {
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debug yes
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domains $(primary_domain) $(local_domains)
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selector default
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key_path ${config.age.secrets.dkim-keys.path}
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}
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}
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deliver_to &remote_queue
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}
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}
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default_source {
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reject 501 5.1.8 "Non-local sender domain"
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}
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}
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|
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target.remote outbound_delivery {
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limits {
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destination rate 20 1s
|
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destination concurrency 10
|
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}
|
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mx_auth {
|
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dane
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mtasts {
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cache fs
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fs_dir mtasts_cache/
|
||||
}
|
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local_policy {
|
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min_tls_level encrypted
|
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min_mx_level none
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}
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}
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}
|
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|
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target.queue remote_queue {
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target &outbound_delivery
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autogenerated_msg_domain $(primary_domain)
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bounce {
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destination postmaster $(local_domains) {
|
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deliver_to &local_routing
|
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}
|
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default_destination {
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reject 550 5.0.0 "Refusing to send DSNs to non-local addresses"
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}
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}
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}
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'';
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# ensureAccounts automatically create an IMAP account which we do not wish
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ensureAccounts = [];
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ensureCredentials = {
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# Be careful there: those are deployed at runtime only if they do not already exists
|
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# As a result using agenix to deploy them will silently failed
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# See impl: https://github.com/NixOS/nixpkgs/blob/nixos-25.05/nixos/modules/services/mail/maddy.nix
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# We will write our own script.
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# But avoid doing this:
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# "test@lasuite.federez.net".passwordFile = config.age.secrets.monitoring.path;
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# "test2@lasuite.federez.net".passwordFile = config.age.secrets.postmaster.path;
|
||||
# ...
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};
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};
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|
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# Execute custom password setup script
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systemd.services.maddyDeployCredsSrv = {
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wantedBy = [ "multi-user.target" ];
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after = [ "maddy.service" ];
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description = "Add password to maddy's static account";
|
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serviceConfig = {
|
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Type = "oneshot";
|
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User = "maddy";
|
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ExecStart = "${maddyDeployCreds}/bin/maddyDeployCreds";
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};
|
||||
};
|
||||
|
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security.acme = {
|
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acceptTerms = true;
|
||||
defaults.email = "monitoring@federez.net";
|
||||
certs = {
|
||||
"lasuite.federez.net" = {
|
||||
domain = "lasuite.federez.net";
|
||||
# Needed for mta-sts compliance
|
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extraDomainNames = map hostToDomain mapping.mail.hosts;
|
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group = "maddy";
|
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dnsProvider = "rfc2136";
|
||||
reloadServices = [
|
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"maddy"
|
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];
|
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dnsPropagationCheck = true;
|
||||
enableDebugLogs = true;
|
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environmentFile = "${pkgs.writeText "dns-creds" ''
|
||||
RFC2136_NAMESERVER=172.19.${toString nodes.${mapping.dns.master}.zone}.${toString nodes.${mapping.dns.master}.id}
|
||||
RFC2136_TSIG_KEY=letsencrypt
|
||||
RFC2136_TSIG_ALGORITHM=hmac-sha512.
|
||||
RFC2136_TSIG_SECRET_FILE="${config.age.secrets.challenge.path}"
|
||||
''}";
|
||||
};
|
||||
};
|
||||
};
|
||||
}
|
||||
|
|
@ -1,8 +1,9 @@
|
|||
{ pkgs ? import <nixpkgs> {} }:
|
||||
|
||||
let
|
||||
agenixCommit = "531beac616433bac6f9e2a19feb8e99a22a66baf";
|
||||
agenixSrc = fetchTarball {
|
||||
url = "https://github.com/ryantm/agenix/archive/main.tar.gz";
|
||||
url = "https://github.com/ryantm/agenix/archive/${agenixCommit}.tar.gz";
|
||||
sha256 = "103slb8xy5sb68zxjjbb9d0svq8xz751a7yrg6vrz5rh4374bzgl";
|
||||
};
|
||||
in
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue