nixos/postfix-tlspol: fix postfix group membership (#418568)
This commit is contained in:
Martin Weinelt
GitHub
commit
16ce859442
@ -10,6 +10,7 @@ let
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hasPrefix
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mkEnableOption
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mkIf
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mkMerge
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mkOption
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mkPackageOption
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types
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@ -121,100 +122,111 @@ in
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};
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};
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config = mkIf cfg.enable {
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environment.etc."postfix-tlspol/config.yaml".source =
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format.generate "postfix-tlspol.yaml" cfg.settings;
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environment.systemPackages = [ cfg.package ];
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# https://github.com/Zuplu/postfix-tlspol#postfix-configuration
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services.postfix.config = mkIf (config.services.postfix.enable && cfg.configurePostfix) {
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smtp_dns_support_level = "dnssec";
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smtp_tls_security_level = "dane";
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smtp_tls_policy_maps =
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let
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address =
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if (hasPrefix "unix:" cfg.settings.server.address) then
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cfg.settings.server.address
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else
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"inet:${cfg.settings.server.address}";
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in
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[ "socketmap:${address}:QUERYwithTLSRPT" ];
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};
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systemd.services.postfix-tlspol = {
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after = [
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"nss-lookup.target"
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"network-online.target"
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];
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wants = [
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"nss-lookup.target"
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"network-online.target"
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];
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wantedBy = [ "multi-user.target" ];
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description = "Postfix DANE/MTA-STS TLS policy socketmap service";
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documentation = [ "https://github.com/Zuplu/postfix-tlspol" ];
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# https://github.com/Zuplu/postfix-tlspol/blob/main/init/postfix-tlspol.service
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serviceConfig = {
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ExecStart = toString [
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(lib.getExe cfg.package)
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"-config"
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"/etc/postfix-tlspol/config.yaml"
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];
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ExecReload = "${lib.getExe' pkgs.util-linux "kill"} -HUP $MAINPID";
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Restart = "always";
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RestartSec = 5;
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DynamicUser = true;
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CacheDirectory = "postfix-tlspol";
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CapabilityBoundingSet = [ "" ];
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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NoNewPrivileges = true;
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PrivateDevices = true;
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PrivateTmp = true;
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PrivateUsers = true;
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ProcSubset = "pid";
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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ProtectSystem = "strict";
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ReadOnlyPaths = [ "/etc/postfix-tlspol/config.yaml" ];
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RemoveIPC = true;
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RestrictAddressFamilies =
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[
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"AF_INET"
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"AF_INET6"
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]
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++ lib.optionals (lib.hasPrefix "unix:" cfg.settings.server.address) [
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"AF_UNIX"
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];
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RestrictNamespace = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SystemCallArchitectures = "native";
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SystemCallFilter = [
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"@system-service"
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"~@privileged @resources"
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];
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SystemCallErrorNumber = "EPERM";
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SecureBits = [
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"noroot"
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"noroot-locked"
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];
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RuntimeDirectory = "postfix-tlspol";
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RuntimeDirectoryMode = "1750";
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WorkingDirectory = "/var/cache/postfix-tlspol";
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UMask = "0117";
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config = mkMerge [
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(mkIf (cfg.enable && config.services.postfix.enable && cfg.configurePostfix) {
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# https://github.com/Zuplu/postfix-tlspol#postfix-configuration
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services.postfix.config = {
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smtp_dns_support_level = "dnssec";
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smtp_tls_security_level = "dane";
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smtp_tls_policy_maps =
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let
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address =
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if (hasPrefix "unix:" cfg.settings.server.address) then
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cfg.settings.server.address
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else
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"inet:${cfg.settings.server.address}";
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in
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[ "socketmap:${address}:QUERYwithTLSRPT" ];
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};
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};
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};
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systemd.services.postfix = {
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wants = [ "postfix-tlspol.service" ];
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after = [ "postfix-tlspol.service" ];
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};
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users.users.postfix.extraGroups = [ "postfix-tlspol" ];
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})
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(mkIf cfg.enable {
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environment.etc."postfix-tlspol/config.yaml".source =
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format.generate "postfix-tlspol.yaml" cfg.settings;
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environment.systemPackages = [ cfg.package ];
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systemd.services.postfix-tlspol = {
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after = [
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"nss-lookup.target"
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"network-online.target"
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];
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wants = [
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"nss-lookup.target"
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"network-online.target"
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];
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wantedBy = [ "multi-user.target" ];
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description = "Postfix DANE/MTA-STS TLS policy socketmap service";
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documentation = [ "https://github.com/Zuplu/postfix-tlspol" ];
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# https://github.com/Zuplu/postfix-tlspol/blob/main/init/postfix-tlspol.service
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serviceConfig = {
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ExecStart = toString [
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(lib.getExe cfg.package)
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"-config"
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"/etc/postfix-tlspol/config.yaml"
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];
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ExecReload = "${lib.getExe' pkgs.util-linux "kill"} -HUP $MAINPID";
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Restart = "always";
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RestartSec = 5;
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DynamicUser = true;
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CacheDirectory = "postfix-tlspol";
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CapabilityBoundingSet = [ "" ];
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LockPersonality = true;
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MemoryDenyWriteExecute = true;
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NoNewPrivileges = true;
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PrivateDevices = true;
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PrivateTmp = true;
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PrivateUsers = true;
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ProcSubset = "pid";
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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ProtectSystem = "strict";
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ReadOnlyPaths = [ "/etc/postfix-tlspol/config.yaml" ];
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RemoveIPC = true;
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RestrictAddressFamilies =
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[
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"AF_INET"
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"AF_INET6"
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]
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++ lib.optionals (lib.hasPrefix "unix:" cfg.settings.server.address) [
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"AF_UNIX"
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];
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RestrictNamespace = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SystemCallArchitectures = "native";
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SystemCallFilter = [
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"@system-service"
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"~@privileged @resources"
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];
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SystemCallErrorNumber = "EPERM";
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SecureBits = [
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"noroot"
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"noroot-locked"
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];
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RuntimeDirectory = "postfix-tlspol";
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RuntimeDirectoryMode = "1750";
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WorkingDirectory = "/var/cache/postfix-tlspol";
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UMask = "0117";
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};
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};
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})
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];
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}
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@ -8,6 +8,7 @@
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meta.maintainers = with lib.maintainers; [ hexa ];
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nodes.machine = {
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services.postfix.enable = true;
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services.postfix-tlspol.enable = true;
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};
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@ -17,6 +18,7 @@
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import json
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machine.wait_for_unit("postfix-tlspol.service")
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machine.succeed("systemctl show -P SupplementaryGroups postfix.service | grep postfix-tlspol")
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with subtest("Interact with the service"):
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machine.succeed("postfix-tlspol -purge")
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