diff --git a/deploy/nginx/renew_certificate.py b/deploy/nginx/renew_certificate.py
index f0365606..8007e519 100644
--- a/deploy/nginx/renew_certificate.py
+++ b/deploy/nginx/renew_certificate.py
@@ -29,6 +29,8 @@ def challenge_arguments():
         return ['--dns', dns_provider()]
     if method != 'http':
         raise RuntimeError('验证方式必须为 dns 或 http，不允许自动回退到停机验证')
+    if '*.solit.cn' in DOMAINS:
+        raise RuntimeError('泛域名证书必须使用 DNS 验证，不能使用 HTTP 验证')
     private = ROOT.lstat()
     if (ROOT.resolve(strict=True) != ROOT or not stat.S_ISDIR(private.st_mode)
             or private.st_uid != 0 or private.st_mode & 0o077):
diff --git a/test/deployment/test_certificate_webroot.py b/test/deployment/test_certificate_webroot.py
index 5f09df9c..1799fe90 100644
--- a/test/deployment/test_certificate_webroot.py
+++ b/test/deployment/test_certificate_webroot.py
@@ -26,6 +26,7 @@ class WebrootTests(unittest.TestCase):
             path.chmod(0o755)
         for context in (patch.object(renew, 'WEBROOT', self.webroot),
                         patch.object(renew, 'ROOT', self.directory),
+                        patch.object(renew, 'DOMAINS', ('solit.cn', 'web.solit.cn')),
                         patch.dict(os.environ, {'SMAIL_ACME_CHALLENGE': 'http'}, clear=True)):
             context.start()
             self.addCleanup(context.stop)
@@ -68,6 +69,11 @@ class WebrootTests(unittest.TestCase):
     def test_http_explicitly_uses_existing_webroot(self):
         self.assertEqual(renew.challenge_arguments(), ['--http', '--http.webroot', str(self.webroot)])
 
+    def test_wildcard_certificate_rejects_http_challenge(self):
+        with patch.object(renew, 'DOMAINS', ('solit.cn', '*.solit.cn')):
+            with self.assertRaisesRegex(RuntimeError, '泛域名证书必须使用 DNS 验证'):
+                renew.challenge_arguments()
+
     def test_due_http_success_reuses_key_without_port_binding(self):
         self.assertTrue(any(command[0].endswith('/lego') for command in self.execute()))
 
diff --git a/test/deployment/webroot_renewal_drill.py b/test/deployment/webroot_renewal_drill.py
index 8f63188b..123d3d90 100644
--- a/test/deployment/webroot_renewal_drill.py
+++ b/test/deployment/webroot_renewal_drill.py
@@ -42,6 +42,8 @@ def main():
     args = parser.parse_args()
     if not args.confirm_staging_challenge or os.geteuid() != 0 or run('hostname') != 'ikun2':
         parser.error('只允许在 47 服务器明确执行测试 CA 的全新 HTTP 挑战')
+    if '*.solit.cn' in renew.DOMAINS:
+        parser.error('当前泛域名证书必须使用 DNS-01，不能执行 HTTP-01 演练')
     if file_state(CONFIG)['sha256'] != CONFIG_SHA:
         parser.error('Nginx 配置与已审查模板不符，停止演练')
     memory = dict(line.split(':', 1) for line in Path('/proc/meminfo').read_text().splitlines())