diff --git a/gpg-mailgate.py b/gpg-mailgate.py
index 087c9c9..a1c01a1 100755
--- a/gpg-mailgate.py
+++ b/gpg-mailgate.py
@@ -36,9 +36,11 @@ import lacre.core as core
 
 LOG = logging.getLogger('gpg-mailgate.py')
 
-missing_params = conf.validate_config()
+missing_params = conf.validate_config(additional=conf.SCRIPT_REQUIRED)
+config_file = conf.config_source()
+
 if missing_params:
-    LOG.error(f"Aborting delivery! Following mandatory config parameters are missing: {missing_params!r}")
+    LOG.error(f"Aborting delivery! Following mandatory config parameters are missing in {config_file!r}: {missing_params}")
     sys.exit(lacre.EX_CONFIG)
 
 delivered = False
diff --git a/lacre/config.py b/lacre/config.py
index 204fde9..9db96ee 100644
--- a/lacre/config.py
+++ b/lacre/config.py
@@ -22,6 +22,9 @@ MANDATORY_CONFIG_ITEMS = [("relay", "host"),
                           ("daemon", "port"),
                           ("gpg", "keyhome")]
 
+SCRIPT_REQUIRED = [('database', 'enabled'),
+                   ('database', 'url')]
+
 CRON_REQUIRED = [('database', 'enabled'),
                  ('database', 'url'),
                  ('cron', 'mail_templates')]
@@ -40,9 +43,9 @@ def load_config() -> dict:
     path.  Otherwise, the default is taken
     ('/etc/gpg-mailgate.conf').
     """
-    configFile = os.getenv(CONFIG_PATH_ENV, '/etc/gpg-mailgate.conf')
+    config_file = config_source()
 
-    parser = _read_config(configFile)
+    parser = _read_config(config_file)
 
     # XXX: Global variable.  It is a left-over from old GPG-Mailgate code.  We
     # should drop it and probably use ConfigParser instance where configuration
@@ -52,6 +55,14 @@ def load_config() -> dict:
     return cfg
 
 
+def config_source() -> str:
+    """Return path of configuration file.
+
+    Taken from GPG_MAILGATE_CONFIG environment variable, and if it's not
+    set, defaults to /etc/gpg-mailgate.conf."""
+    return os.getenv(CONFIG_PATH_ENV, '/etc/gpg-mailgate.conf')
+
+
 def _read_config(fileName) -> RawConfigParser:
     cp = RawConfigParser()
     cp.read(fileName)
diff --git a/lacre/keyring.py b/lacre/keyring.py
index 9637868..0d9cff1 100644
--- a/lacre/keyring.py
+++ b/lacre/keyring.py
@@ -18,3 +18,12 @@ def init_keyring() -> KeyRing:
     schema = dbk.KeyRingSchema()
     LOG.info('Initialising database keyring from %s', url)
     return dbk.DatabaseKeyRing(url, schema)
+
+
+def freeze_and_load_keys():
+    """Load and return keys.
+
+    Doesn't refresh the keys when they change on disk.
+    """
+    keyring = init_keyring()
+    return keyring.freeze_identities()
diff --git a/test/e2e_test.py b/test/e2e_test.py
index 455adae..2255ea5 100644
--- a/test/e2e_test.py
+++ b/test/e2e_test.py
@@ -39,6 +39,10 @@ def _build_config(config):
     cp.add_section("gpg")
     cp.set("gpg", "keyhome", config["gpg_keyhome"])
 
+    cp.add_section('database')
+    cp.set('database', 'enabled', 'yes')
+    cp.set('database', 'url', 'sqlite:///test/lacre.db')
+
     cp.add_section("smime")
     cp.set("smime", "cert_path", config["smime_certpath"])
 
diff --git a/test/modules/test_dbkeyring.py b/test/modules/test_dbkeyring.py
index 1b6638d..482f35d 100644
--- a/test/modules/test_dbkeyring.py
+++ b/test/modules/test_dbkeyring.py
@@ -4,13 +4,13 @@ import lacre.dbkeyring as dbk
 
 import unittest
 
-class LacreDbKeyringTest(unittest.IsolatedAsyncioTestCase):
-    async def test_load_keys(self):
+class LacreDbKeyringTest(unittest.TestCase):
+    def test_load_keys(self):
         db_url = 'sqlite:///test/lacre.db'
         schema = dbk.KeyRingSchema()
         db = dbk.DatabaseKeyRing(db_url, schema)
 
-        identities = await db.freeze_identities()
+        identities = db.freeze_identities()
 
         self.assertTrue('1CD245308F0963D038E88357973CF4D9387C44D7' in identities)
         self.assertTrue(identities.has_email('alice@disposlab'))