Add DNS provider for Syse.no (#2742)

2026-03-14 14:35:48 +01:00 · 2025-12-08 20:25:08 +01:00 · 2025-12-08 20:25:08 +01:00 · 02dd7152f0
commit 02dd7152f0
parent 36552da309
13 changed files with 789 additions and 9 deletions
--- a/README.md
+++ b/README.md
@ -237,42 +237,42 @@ Detailed documentation is available [here](https://go-acme.github.io/lego/dns).
  <td><a href="https://go-acme.github.io/lego/dns/sonic/">Sonic</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/spaceship/">Spaceship</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/stackpath/">Stackpath</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/technitium/">Technitium</a></td>
+  <td><a href="https://go-acme.github.io/lego/dns/syse/">Syse</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/technitium/">Technitium</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/tencentcloud/">Tencent Cloud DNS</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/edgeone/">Tencent EdgeOne</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/timewebcloud/">Timeweb Cloud</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/transip/">TransIP</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/transip/">TransIP</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/safedns/">UKFast SafeDNS</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/ultradns/">Ultradns</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/uniteddomains/">United-Domains</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/variomedia/">Variomedia</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/variomedia/">Variomedia</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/vegadns/">VegaDNS</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/vercel/">Vercel</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/versio/">Versio.[nl|eu|uk]</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/vinyldns/">VinylDNS</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/vinyldns/">VinylDNS</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/vkcloud/">VK Cloud</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/volcengine/">Volcano Engine/火山引擎</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/vscale/">Vscale</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/vultr/">Vultr</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/vultr/">Vultr</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/webnamesca/">webnames.ca</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/webnames/">webnames.ru</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/websupport/">Websupport</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/wedos/">WEDOS</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/wedos/">WEDOS</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/westcn/">West.cn/西部数码</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/yandex360/">Yandex 360</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/yandexcloud/">Yandex Cloud</a></td>
-  <td><a href="https://go-acme.github.io/lego/dns/yandex/">Yandex PDD</a></td>
 </tr><tr>
+  <td><a href="https://go-acme.github.io/lego/dns/yandex/">Yandex PDD</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/zoneee/">Zone.ee</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/zoneedit/">ZoneEdit</a></td>
  <td><a href="https://go-acme.github.io/lego/dns/zonomi/">Zonomi</a></td>
-  <td></td>
 </tr></table>

 <!-- END DNS PROVIDERS LIST -->
--- a/cmd/zz_gen_cmd_dnshelp.go
+++ b/cmd/zz_gen_cmd_dnshelp.go
@ -157,6 +157,7 @@ func allDNSCodes() string {
 		"sonic",
 		"spaceship",
 		"stackpath",
+		"syse",
 		"technitium",
 		"tencentcloud",
 		"timewebcloud",
@ -3312,6 +3313,26 @@ func displayDNSHelp(w io.Writer, name string) error {
 		ew.writeln()
 		ew.writeln(`More information: https://go-acme.github.io/lego/dns/stackpath`)

+	case "syse":
+		// generated from: providers/dns/syse/syse.toml
+		ew.writeln(`Configuration for Syse.`)
+		ew.writeln(`Code:	'syse'`)
+		ew.writeln(`Since:	'v4.30.0'`)
+		ew.writeln()
+
+		ew.writeln(`Credentials:`)
+		ew.writeln(`	- "SYSE_CREDENTIALS":	Comma-separated list of 'zone:password' credential pairs`)
+		ew.writeln()
+
+		ew.writeln(`Additional Configuration:`)
+		ew.writeln(`	- "SYSE_HTTP_TIMEOUT":	API request timeout in seconds (Default: 30)`)
+		ew.writeln(`	- "SYSE_POLLING_INTERVAL":	Time between DNS propagation check in seconds (Default: 10)`)
+		ew.writeln(`	- "SYSE_PROPAGATION_TIMEOUT":	Maximum waiting time for DNS propagation in seconds (Default: 1200)`)
+		ew.writeln(`	- "SYSE_TTL":	The TTL of the TXT record used for the DNS challenge in seconds (Default: 120)`)
+
+		ew.writeln()
+		ew.writeln(`More information: https://go-acme.github.io/lego/dns/syse`)
+
 	case "technitium":
 		// generated from: providers/dns/technitium/technitium.toml
 		ew.writeln(`Configuration for Technitium.`)
--- a/docs/content/dns/zz_gen_syse.md
+++ b/docs/content/dns/zz_gen_syse.md
@ -0,0 +1,70 @@
+---
+title: "Syse"
+date: 2019-03-03T16:39:46+01:00
+draft: false
+slug: syse
+dnsprovider:
+  since:    "v4.30.0"
+  code:     "syse"
+  url:      "https://www.syse.no/"
+---
+
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
+<!-- providers/dns/syse/syse.toml -->
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
+
+
+Configuration for [Syse](https://www.syse.no/).
+
+
+<!--more-->
+
+- Code: `syse`
+- Since: v4.30.0
+
+
+Here is an example bash command using the Syse provider:
+
+```bash
+SYSE_CREDENTIALS=example.com:password \
+lego --email you@example.com --dns syse -d '*.example.com' -d example.com run
+
+SYSE_CREDENTIALS=example.org:password1,example.com:password2 \
+lego --email you@example.com --dns syse -d '*.example.org' -d example.org -d '*.example.com' -d example.com
+```
+
+
+
+
+## Credentials
+
+| Environment Variable Name | Description |
+|-----------------------|-------------|
+| `SYSE_CREDENTIALS` | Comma-separated list of `zone:password` credential pairs |
+
+The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
+More information [here]({{% ref "dns#configuration-and-credentials" %}}).
+
+
+## Additional Configuration
+
+| Environment Variable Name | Description |
+|--------------------------------|-------------|
+| `SYSE_HTTP_TIMEOUT` | API request timeout in seconds (Default: 30) |
+| `SYSE_POLLING_INTERVAL` | Time between DNS propagation check in seconds (Default: 10) |
+| `SYSE_PROPAGATION_TIMEOUT` | Maximum waiting time for DNS propagation in seconds (Default: 1200) |
+| `SYSE_TTL` | The TTL of the TXT record used for the DNS challenge in seconds (Default: 120) |
+
+The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
+More information [here]({{% ref "dns#configuration-and-credentials" %}}).
+
+
+
+
+## More information
+
+- [API documentation](https://www.syse.no/api/dns)
+
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
+<!-- providers/dns/syse/syse.toml -->
+<!-- THIS DOCUMENTATION IS AUTO-GENERATED. PLEASE DO NOT EDIT. -->
--- a/docs/data/zz_cli_help.toml
+++ b/docs/data/zz_cli_help.toml
@ -152,7 +152,7 @@ To display the documentation for a specific DNS provider, run:
  $ lego dnshelp -c code

 Supported DNS providers:
-  acme-dns, active24, alidns, aliesa, allinkl, anexia, arvancloud, auroradns, autodns, axelname, azion, azure, azuredns, baiducloud, beget, binarylane, bindman, bluecat, bookmyname, brandit, bunny, checkdomain, civo, clouddns, cloudflare, cloudns, cloudru, cloudxns, conoha, conohav3, constellix, corenetworks, cpanel, derak, desec, designate, digitalocean, directadmin, dnshomede, dnsimple, dnsmadeeasy, dnspod, dode, domeneshop, dreamhost, duckdns, dyn, dyndnsfree, dynu, easydns, edgecenter, edgedns, edgeone, efficientip, epik, exec, exoscale, f5xc, freemyip, gandi, gandiv5, gcloud, gcore, gigahostno, glesys, godaddy, googledomains, gravity, hetzner, hostingde, hostinger, hosttech, httpnet, httpreq, huaweicloud, hurricane, hyperone, ibmcloud, iij, iijdpf, infoblox, infomaniak, internetbs, inwx, ionos, ipv64, iwantmyname, joker, keyhelp, liara, lightsail, limacity, linode, liquidweb, loopia, luadns, mailinabox, manageengine, manual, metaname, metaregistrar, mijnhost, mittwald, myaddr, mydnsjp, mythicbeasts, namecheap, namedotcom, namesilo, nearlyfreespeech, netcup, netlify, nicmanager, nicru, nifcloud, njalla, nodion, ns1, octenium, oraclecloud, otc, ovh, pdns, plesk, porkbun, rackspace, rainyun, rcodezero, regfish, regru, rfc2136, rimuhosting, route53, safedns, sakuracloud, scaleway, selectel, selectelv2, selfhostde, servercow, shellrent, simply, sonic, spaceship, stackpath, technitium, tencentcloud, timewebcloud, transip, ultradns, uniteddomains, variomedia, vegadns, vercel, versio, vinyldns, vkcloud, volcengine, vscale, vultr, webnames, webnamesca, websupport, wedos, westcn, yandex, yandex360, yandexcloud, zoneedit, zoneee, zonomi
+  acme-dns, active24, alidns, aliesa, allinkl, anexia, arvancloud, auroradns, autodns, axelname, azion, azure, azuredns, baiducloud, beget, binarylane, bindman, bluecat, bookmyname, brandit, bunny, checkdomain, civo, clouddns, cloudflare, cloudns, cloudru, cloudxns, conoha, conohav3, constellix, corenetworks, cpanel, derak, desec, designate, digitalocean, directadmin, dnshomede, dnsimple, dnsmadeeasy, dnspod, dode, domeneshop, dreamhost, duckdns, dyn, dyndnsfree, dynu, easydns, edgecenter, edgedns, edgeone, efficientip, epik, exec, exoscale, f5xc, freemyip, gandi, gandiv5, gcloud, gcore, gigahostno, glesys, godaddy, googledomains, gravity, hetzner, hostingde, hostinger, hosttech, httpnet, httpreq, huaweicloud, hurricane, hyperone, ibmcloud, iij, iijdpf, infoblox, infomaniak, internetbs, inwx, ionos, ipv64, iwantmyname, joker, keyhelp, liara, lightsail, limacity, linode, liquidweb, loopia, luadns, mailinabox, manageengine, manual, metaname, metaregistrar, mijnhost, mittwald, myaddr, mydnsjp, mythicbeasts, namecheap, namedotcom, namesilo, nearlyfreespeech, netcup, netlify, nicmanager, nicru, nifcloud, njalla, nodion, ns1, octenium, oraclecloud, otc, ovh, pdns, plesk, porkbun, rackspace, rainyun, rcodezero, regfish, regru, rfc2136, rimuhosting, route53, safedns, sakuracloud, scaleway, selectel, selectelv2, selfhostde, servercow, shellrent, simply, sonic, spaceship, stackpath, syse, technitium, tencentcloud, timewebcloud, transip, ultradns, uniteddomains, variomedia, vegadns, vercel, versio, vinyldns, vkcloud, volcengine, vscale, vultr, webnames, webnamesca, websupport, wedos, westcn, yandex, yandex360, yandexcloud, zoneedit, zoneee, zonomi

 More information: https://go-acme.github.io/lego/dns
 """
--- a/providers/dns/syse/internal/client.go
+++ b/providers/dns/syse/internal/client.go
@ -0,0 +1,131 @@
+package internal
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"time"
+
+	"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
+	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
+)
+
+const defaultBaseURL = "https://www.syse.no/api"
+
+// Client the Syse API client.
+type Client struct {
+	credentials map[string]string
+
+	BaseURL    *url.URL
+	HTTPClient *http.Client
+}
+
+// NewClient creates a new Client.
+func NewClient(credentials map[string]string) (*Client, error) {
+	if len(credentials) == 0 {
+		return nil, errors.New("credentials missing")
+	}
+
+	baseURL, _ := url.Parse(defaultBaseURL)
+
+	return &Client{
+		credentials: credentials,
+		BaseURL:     baseURL,
+		HTTPClient:  &http.Client{Timeout: 10 * time.Second},
+	}, nil
+}
+
+func (c *Client) CreateRecord(ctx context.Context, zone string, record Record) (*Record, error) {
+	endpoint := c.BaseURL.JoinPath("dns", zone)
+
+	req, err := newJSONRequest(ctx, http.MethodPost, endpoint, record)
+	if err != nil {
+		return nil, err
+	}
+
+	req.SetBasicAuth(zone, c.credentials[zone])
+
+	result := new(Record)
+
+	err = c.do(req, result)
+	if err != nil {
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (c *Client) DeleteRecord(ctx context.Context, zone, recordID string) error {
+	endpoint := c.BaseURL.JoinPath("dns", zone, recordID)
+
+	req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, nil)
+	if err != nil {
+		return err
+	}
+
+	req.SetBasicAuth(zone, c.credentials[zone])
+
+	return c.do(req, nil)
+}
+
+func (c *Client) do(req *http.Request, result any) error {
+	useragent.SetHeader(req.Header)
+
+	resp, err := c.HTTPClient.Do(req)
+	if err != nil {
+		return errutils.NewHTTPDoError(req, err)
+	}
+
+	defer func() { _ = resp.Body.Close() }()
+
+	if resp.StatusCode/100 != 2 {
+		raw, _ := io.ReadAll(resp.Body)
+
+		return errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw)
+	}
+
+	if result == nil {
+		return nil
+	}
+
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return errutils.NewReadResponseError(req, resp.StatusCode, err)
+	}
+
+	err = json.Unmarshal(raw, result)
+	if err != nil {
+		return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
+	}
+
+	return nil
+}
+
+func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
+	buf := new(bytes.Buffer)
+
+	if payload != nil {
+		err := json.NewEncoder(buf).Encode(payload)
+		if err != nil {
+			return nil, fmt.Errorf("failed to create request JSON body: %w", err)
+		}
+	}
+
+	req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
+	if err != nil {
+		return nil, fmt.Errorf("unable to create request: %w", err)
+	}
+
+	req.Header.Set("Accept", "application/json")
+
+	if payload != nil {
+		req.Header.Set("Content-Type", "application/json")
+	}
+
+	return req, nil
+}
--- a/providers/dns/syse/internal/client_test.go
+++ b/providers/dns/syse/internal/client_test.go
@ -0,0 +1,102 @@
+package internal
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/go-acme/lego/v4/platform/tester/servermock"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func mockBuilder() *servermock.Builder[*Client] {
+	return servermock.NewBuilder[*Client](
+		func(server *httptest.Server) (*Client, error) {
+			client, err := NewClient(map[string]string{
+				"example.com": "secret",
+			})
+			if err != nil {
+				return nil, err
+			}
+
+			client.BaseURL, _ = url.Parse(server.URL)
+			client.HTTPClient = server.Client()
+
+			return client, nil
+		},
+		servermock.CheckHeader().
+			WithJSONHeaders(),
+	)
+}
+
+func TestClient_CreateRecord(t *testing.T) {
+	client := mockBuilder().
+		Route("POST /dns/example.com",
+			servermock.ResponseFromFixture("create_record.json"),
+			servermock.CheckRequestJSONBodyFromFixture("create_record-request.json")).
+		Build(t)
+
+	record := Record{
+		Type:    "TXT",
+		Prefix:  "_acme-challenge",
+		Content: "ADw2sEd82DUgXcQ9hNBZThJs7zVJkR5v9JeSbAb9mZY",
+		Active:  true,
+		TTL:     120,
+	}
+
+	result, err := client.CreateRecord(t.Context(), "example.com", record)
+	require.NoError(t, err)
+
+	expected := &Record{
+		ID:      "1234",
+		Type:    "TXT",
+		Prefix:  "_acme-challenge",
+		Content: "ADw2sEd82DUgXcQ9hNBZThJs7zVJkR5v9JeSbAb9mZY",
+		Active:  true,
+		TTL:     120,
+	}
+
+	assert.Equal(t, expected, result)
+}
+
+func TestClient_CreateRecord_error(t *testing.T) {
+	client := mockBuilder().
+		Route("POST /dns/example.com",
+			servermock.RawStringResponse(http.StatusText(http.StatusUnauthorized)).
+				WithStatusCode(http.StatusUnauthorized)).
+		Build(t)
+
+	record := Record{
+		Type:    "TXT",
+		Prefix:  "_acme-challenge",
+		Content: "ADw2sEd82DUgXcQ9hNBZThJs7zVJkR5v9JeSbAb9mZY",
+		Active:  true,
+		TTL:     120,
+	}
+
+	_, err := client.CreateRecord(t.Context(), "example.com", record)
+	require.EqualError(t, err, "unexpected status code: [status code: 401] body: Unauthorized")
+}
+
+func TestClient_DeleteRecord(t *testing.T) {
+	client := mockBuilder().
+		Route("DELETE /dns/example.com/1234",
+			servermock.Noop()).
+		Build(t)
+
+	err := client.DeleteRecord(t.Context(), "example.com", "1234")
+	require.NoError(t, err)
+}
+
+func TestClient_DeleteRecord_error(t *testing.T) {
+	client := mockBuilder().
+		Route("DELETE /dns/example.com/1234",
+			servermock.RawStringResponse(http.StatusText(http.StatusUnauthorized)).
+				WithStatusCode(http.StatusUnauthorized)).
+		Build(t)
+
+	err := client.DeleteRecord(t.Context(), "example.com", "1234")
+	require.EqualError(t, err, "unexpected status code: [status code: 401] body: Unauthorized")
+}
--- a/providers/dns/syse/internal/fixtures/create_record-request.json
+++ b/providers/dns/syse/internal/fixtures/create_record-request.json
@ -0,0 +1,7 @@
+{
+  "content": "ADw2sEd82DUgXcQ9hNBZThJs7zVJkR5v9JeSbAb9mZY",
+  "active": true,
+  "ttl": 120,
+  "prefix": "_acme-challenge",
+  "type": "TXT"
+}
--- a/providers/dns/syse/internal/fixtures/create_record.json
+++ b/providers/dns/syse/internal/fixtures/create_record.json
@ -0,0 +1,8 @@
+{
+  "id": "1234",
+  "content": "ADw2sEd82DUgXcQ9hNBZThJs7zVJkR5v9JeSbAb9mZY",
+  "active": true,
+  "ttl": 120,
+  "prefix": "_acme-challenge",
+  "type": "TXT"
+}
--- a/providers/dns/syse/internal/types.go
+++ b/providers/dns/syse/internal/types.go
@ -0,0 +1,11 @@
+package internal
+
+type Record struct {
+	ID       string `json:"id,omitempty"`
+	Type     string `json:"type,omitempty"`
+	Prefix   string `json:"prefix,omitempty"`
+	Content  string `json:"content,omitempty"`
+	Priority int    `json:"prio,omitempty"`
+	TTL      int    `json:"ttl,omitempty"`
+	Active   bool   `json:"active,omitempty"`
+}
--- a/providers/dns/syse/syse.go
+++ b/providers/dns/syse/syse.go
@ -0,0 +1,182 @@
+// Package syse implements a DNS provider for solving the DNS-01 challenge using Syse.
+package syse
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/go-acme/lego/v4/challenge/dns01"
+	"github.com/go-acme/lego/v4/platform/config/env"
+	"github.com/go-acme/lego/v4/providers/dns/internal/clientdebug"
+	"github.com/go-acme/lego/v4/providers/dns/syse/internal"
+)
+
+// Environment variables names.
+const (
+	envNamespace = "SYSE_"
+
+	EnvCredentials = envNamespace + "CREDENTIALS"
+
+	EnvTTL                = envNamespace + "TTL"
+	EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
+	EnvPollingInterval    = envNamespace + "POLLING_INTERVAL"
+	EnvHTTPTimeout        = envNamespace + "HTTP_TIMEOUT"
+)
+
+// Config is used to configure the creation of the DNSProvider.
+type Config struct {
+	Credentials map[string]string
+
+	PropagationTimeout time.Duration
+	PollingInterval    time.Duration
+	TTL                int
+	HTTPClient         *http.Client
+}
+
+// NewDefaultConfig returns a default configuration for the DNSProvider.
+func NewDefaultConfig() *Config {
+	return &Config{
+		TTL:                env.GetOrDefaultInt(EnvTTL, dns01.DefaultTTL),
+		PropagationTimeout: env.GetOrDefaultSecond(EnvPropagationTimeout, 1200*time.Second),
+		PollingInterval:    env.GetOrDefaultSecond(EnvPollingInterval, 10*time.Second),
+		HTTPClient: &http.Client{
+			Timeout: env.GetOrDefaultSecond(EnvHTTPTimeout, 30*time.Second),
+		},
+	}
+}
+
+// DNSProvider implements the challenge.Provider interface.
+type DNSProvider struct {
+	config *Config
+	client *internal.Client
+
+	recordIDs   map[string]string
+	recordIDsMu sync.Mutex
+}
+
+// NewDNSProvider returns a DNSProvider instance configured for Syse.
+func NewDNSProvider() (*DNSProvider, error) {
+	values, err := env.Get(EnvCredentials)
+	if err != nil {
+		return nil, fmt.Errorf("syse: %w", err)
+	}
+
+	config := NewDefaultConfig()
+
+	credentials, err := env.ParsePairs(values[EnvCredentials])
+	if err != nil {
+		return nil, fmt.Errorf("syse: credentials: %w", err)
+	}
+
+	config.Credentials = credentials
+
+	return NewDNSProviderConfig(config)
+}
+
+// NewDNSProviderConfig return a DNSProvider instance configured for Syse.
+func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
+	if config == nil {
+		return nil, errors.New("syse: the configuration of the DNS provider is nil")
+	}
+
+	if len(config.Credentials) == 0 {
+		return nil, errors.New("syse: missing credentials")
+	}
+
+	for domain, password := range config.Credentials {
+		if domain == "" {
+			return nil, fmt.Errorf(`syse: missing domain: "%s:%s"`, domain, password)
+		}
+
+		if password == "" {
+			return nil, fmt.Errorf(`syse: missing password: "%s:%s"`, domain, password)
+		}
+	}
+
+	client, err := internal.NewClient(config.Credentials)
+	if err != nil {
+		return nil, fmt.Errorf("syse: %w", err)
+	}
+
+	if config.HTTPClient != nil {
+		client.HTTPClient = config.HTTPClient
+	}
+
+	client.HTTPClient = clientdebug.Wrap(client.HTTPClient)
+
+	return &DNSProvider{
+		config:    config,
+		client:    client,
+		recordIDs: make(map[string]string),
+	}, nil
+}
+
+// Present creates a TXT record using the specified parameters.
+func (d *DNSProvider) Present(domain, token, keyAuth string) error {
+	info := dns01.GetChallengeInfo(domain, keyAuth)
+
+	authZone, err := dns01.FindZoneByFqdn(info.EffectiveFQDN)
+	if err != nil {
+		return fmt.Errorf("syse: could not find zone for domain %q: %w", domain, err)
+	}
+
+	subDomain, err := dns01.ExtractSubDomain(info.EffectiveFQDN, authZone)
+	if err != nil {
+		return fmt.Errorf("syse: %w", err)
+	}
+
+	record := internal.Record{
+		Type:    "TXT",
+		Prefix:  subDomain,
+		Content: info.Value,
+		TTL:     d.config.TTL,
+		Active:  true,
+	}
+
+	newRecord, err := d.client.CreateRecord(context.Background(), dns01.UnFqdn(authZone), record)
+	if err != nil {
+		return fmt.Errorf("syse: create record: %w", err)
+	}
+
+	d.recordIDsMu.Lock()
+	d.recordIDs[token] = newRecord.ID
+	d.recordIDsMu.Unlock()
+
+	return nil
+}
+
+// CleanUp removes the TXT record matching the specified parameters.
+func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	info := dns01.GetChallengeInfo(domain, keyAuth)
+
+	authZone, err := dns01.FindZoneByFqdn(info.EffectiveFQDN)
+	if err != nil {
+		return fmt.Errorf("syse: could not find zone for domain %q: %w", domain, err)
+	}
+
+	// gets the record's unique ID from when we created it
+	d.recordIDsMu.Lock()
+	recordID, ok := d.recordIDs[token]
+	d.recordIDsMu.Unlock()
+
+	if !ok {
+		return fmt.Errorf("syse: unknown record ID for '%s' '%s'", info.EffectiveFQDN, token)
+	}
+
+	err = d.client.DeleteRecord(context.Background(), dns01.UnFqdn(authZone), recordID)
+	if err != nil {
+		return fmt.Errorf("syse: delete record: %w", err)
+	}
+
+	return nil
+}
+
+// Timeout returns the timeout and interval to use when checking for DNS propagation.
+// Adjusting here to cope with spikes in propagation times.
+func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
+	return d.config.PropagationTimeout, d.config.PollingInterval
+}
--- a/providers/dns/syse/syse.toml
+++ b/providers/dns/syse/syse.toml
@ -0,0 +1,25 @@
+Name = "Syse"
+Description = ''''''
+URL = "https://www.syse.no/"
+Code = "syse"
+Since = "v4.30.0"
+
+Example = '''
+SYSE_CREDENTIALS=example.com:password \
+lego --email you@example.com --dns syse -d '*.example.com' -d example.com run
+
+SYSE_CREDENTIALS=example.org:password1,example.com:password2 \
+lego --email you@example.com --dns syse -d '*.example.org' -d example.org -d '*.example.com' -d example.com
+'''
+
+[Configuration]
+  [Configuration.Credentials]
+    SYSE_CREDENTIALS = "Comma-separated list of `zone:password` credential pairs"
+  [Configuration.Additional]
+    SYSE_POLLING_INTERVAL = "Time between DNS propagation check in seconds (Default: 10)"
+    SYSE_PROPAGATION_TIMEOUT = "Maximum waiting time for DNS propagation in seconds (Default: 1200)"
+    SYSE_TTL = "The TTL of the TXT record used for the DNS challenge in seconds (Default: 120)"
+    SYSE_HTTP_TIMEOUT = "API request timeout in seconds (Default: 30)"
+
+[Links]
+  API = "https://www.syse.no/api/dns"
--- a/providers/dns/syse/syse_test.go
+++ b/providers/dns/syse/syse_test.go
@ -0,0 +1,220 @@
+package syse
+
+import (
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/go-acme/lego/v4/platform/tester"
+	"github.com/go-acme/lego/v4/platform/tester/servermock"
+	"github.com/stretchr/testify/require"
+)
+
+const envDomain = envNamespace + "DOMAIN"
+
+var envTest = tester.NewEnvTest(EnvCredentials).WithDomain(envDomain)
+
+func TestNewDNSProvider(t *testing.T) {
+	testCases := []struct {
+		desc     string
+		envVars  map[string]string
+		expected string
+	}{
+		{
+			desc: "success",
+			envVars: map[string]string{
+				EnvCredentials: "example.org:123",
+			},
+		},
+		{
+			desc: "success multiple domains",
+			envVars: map[string]string{
+				EnvCredentials: "example.org:123,example.com:456,example.net:789",
+			},
+		},
+		{
+			desc: "invalid credentials",
+			envVars: map[string]string{
+				EnvCredentials: ",",
+			},
+			expected: `syse: credentials: incorrect pair: `,
+		},
+		{
+			desc: "missing password",
+			envVars: map[string]string{
+				EnvCredentials: "example.org:",
+			},
+			expected: `syse: missing password: "example.org:"`,
+		},
+		{
+			desc: "missing domain",
+			envVars: map[string]string{
+				EnvCredentials: ":123",
+			},
+			expected: `syse: missing domain: ":123"`,
+		},
+		{
+			desc: "invalid credentials, partial",
+			envVars: map[string]string{
+				EnvCredentials: "example.org:123,example.net",
+			},
+			expected: "syse: credentials: incorrect pair: example.net",
+		},
+		{
+			desc: "missing credentials",
+			envVars: map[string]string{
+				EnvCredentials: "",
+			},
+			expected: "syse: some credentials information are missing: SYSE_CREDENTIALS",
+		},
+	}
+
+	for _, test := range testCases {
+		t.Run(test.desc, func(t *testing.T) {
+			defer envTest.RestoreEnv()
+
+			envTest.ClearEnv()
+
+			envTest.Apply(test.envVars)
+
+			p, err := NewDNSProvider()
+
+			if test.expected == "" {
+				require.NoError(t, err)
+				require.NotNil(t, p)
+				require.NotNil(t, p.config)
+				require.NotNil(t, p.client)
+			} else {
+				require.EqualError(t, err, test.expected)
+			}
+		})
+	}
+}
+
+func TestNewDNSProviderConfig(t *testing.T) {
+	testCases := []struct {
+		desc     string
+		creds    map[string]string
+		expected string
+	}{
+		{
+			desc:  "success",
+			creds: map[string]string{"example.org": "123"},
+		},
+		{
+			desc: "success multiple domains",
+			creds: map[string]string{
+				"example.org": "123",
+				"example.com": "456",
+				"example.net": "789",
+			},
+		},
+		{
+			desc:     "missing credentials",
+			expected: "syse: missing credentials",
+		},
+		{
+			desc:     "missing domain",
+			creds:    map[string]string{"": "123"},
+			expected: `syse: missing domain: ":123"`,
+		},
+		{
+			desc:     "missing password",
+			creds:    map[string]string{"example.org": ""},
+			expected: `syse: missing password: "example.org:"`,
+		},
+	}
+
+	for _, test := range testCases {
+		t.Run(test.desc, func(t *testing.T) {
+			config := NewDefaultConfig()
+			config.Credentials = test.creds
+
+			p, err := NewDNSProviderConfig(config)
+
+			if test.expected == "" {
+				require.NoError(t, err)
+				require.NotNil(t, p)
+				require.NotNil(t, p.config)
+				require.NotNil(t, p.client)
+			} else {
+				require.EqualError(t, err, test.expected)
+			}
+		})
+	}
+}
+
+func TestLivePresent(t *testing.T) {
+	if !envTest.IsLiveTest() {
+		t.Skip("skipping live test")
+	}
+
+	envTest.RestoreEnv()
+
+	provider, err := NewDNSProvider()
+	require.NoError(t, err)
+
+	err = provider.Present(envTest.GetDomain(), "", "123d==")
+	require.NoError(t, err)
+}
+
+func TestLiveCleanUp(t *testing.T) {
+	if !envTest.IsLiveTest() {
+		t.Skip("skipping live test")
+	}
+
+	envTest.RestoreEnv()
+
+	provider, err := NewDNSProvider()
+	require.NoError(t, err)
+
+	err = provider.CleanUp(envTest.GetDomain(), "", "123d==")
+	require.NoError(t, err)
+}
+
+func mockBuilder() *servermock.Builder[*DNSProvider] {
+	return servermock.NewBuilder(
+		func(server *httptest.Server) (*DNSProvider, error) {
+			config := NewDefaultConfig()
+			config.Credentials = map[string]string{
+				"example.org": "secret",
+			}
+			config.HTTPClient = server.Client()
+
+			p, err := NewDNSProviderConfig(config)
+			if err != nil {
+				return nil, err
+			}
+
+			p.client.BaseURL, _ = url.Parse(server.URL)
+
+			return p, nil
+		},
+		servermock.CheckHeader().
+			WithJSONHeaders(),
+	)
+}
+
+func TestDNSProvider_Present(t *testing.T) {
+	provider := mockBuilder().
+		Route("/", servermock.DumpRequest()).
+		Route("POST /dns/example.com",
+			servermock.ResponseFromInternal("create_record.json"),
+			servermock.CheckRequestJSONBodyFromInternal("create_record-request.json")).
+		Build(t)
+
+	err := provider.Present("example.com", "abc", "123d==")
+	require.NoError(t, err)
+}
+
+func TestDNSProvider_CleanUp(t *testing.T) {
+	provider := mockBuilder().
+		Route("DELETE /dns/example.com/1234",
+			servermock.Noop()).
+		Build(t)
+
+	provider.recordIDs["abc"] = "1234"
+
+	err := provider.CleanUp("example.com", "abc", "123d==")
+	require.NoError(t, err)
+}
--- a/providers/dns/zz_gen_dns_providers.go
+++ b/providers/dns/zz_gen_dns_providers.go
@ -151,6 +151,7 @@ import (
 	"github.com/go-acme/lego/v4/providers/dns/sonic"
 	"github.com/go-acme/lego/v4/providers/dns/spaceship"
 	"github.com/go-acme/lego/v4/providers/dns/stackpath"
+	"github.com/go-acme/lego/v4/providers/dns/syse"
 	"github.com/go-acme/lego/v4/providers/dns/technitium"
 	"github.com/go-acme/lego/v4/providers/dns/tencentcloud"
 	"github.com/go-acme/lego/v4/providers/dns/timewebcloud"
@ -472,6 +473,8 @@ func NewDNSChallengeProviderByName(name string) (challenge.Provider, error) {
 		return spaceship.NewDNSProvider()
 	case "stackpath":
 		return stackpath.NewDNSProvider()
+	case "syse":
+		return syse.NewDNSProvider()
 	case "technitium":
 		return technitium.NewDNSProvider()
 	case "tencentcloud":