diff --git a/rootfs/etc/dovecot/oauth2-userdb.lua b/rootfs/etc/dovecot/oauth2-userdb.lua
deleted file mode 100644
index 82791d7..0000000
--- a/rootfs/etc/dovecot/oauth2-userdb.lua
+++ /dev/null
@@ -1,44 +0,0 @@
-local rapidjson = require('rapidjson')
-
-local clientId = os.getenv("CLIENT_ID")
-local clientSecret = os.getenv("CLIENT_SECRET")
-local username = os.getenv("OAUTH_ADMIN_USER")
-local password = os.getenv("OAUTH_ADMIN_PASSWORD")
-local tokenUrl = os.getenv("GRANT_URL")
-local userUrl = os.getenv("USER_URL")
-
-function os.capture(cmd, raw)
-  local f = assert(io.popen(cmd, 'r'))
-  local s = assert(f:read('*a'))
-  f:close()
-
-  return s
-end
-
-function auth_userdb_lookup(req)
-	local tokenCmd = "curl -L --silent -X POST -d \"grant_type=password\"" 
-	tokenCmd = tokenCmd .. " -d \"client_id=" .. clientId .. "\""
-	tokenCmd = tokenCmd .. " -d \"client_secret=" .. clientSecret .. "\""
-	tokenCmd = tokenCmd .. " -d \"username=" .. username .. "\""
-	tokenCmd = tokenCmd .. " -d \"password=" .. password .. "\""
-	tokenCmd = tokenCmd .. " \"" .. tokenUrl .. "\""
-
-	local tokenRaw = os.capture(tokenCmd)
-	local tokenJson = rapidjson.decode(tokenRaw)
-	local accessToken = tokenJson.access_token
-
-	local userCmd = "curl -L --silent -H \"Authorization: Bearer " .. accessToken .. "\" \"" .. userUrl .. req.username .. "\""
-	local userRaw = os.capture(userCmd)
-	local userJson = rapidjson.decode(userRaw)
-
-	if #userJson == 0 then
-		return dovecot.auth.USERDB_RESULT_USER_UNKNOWN, "no such user"
-	end
-
-	if userJson[1].username == req.username then
-		return dovecot.auth.USERDB_RESULT_OK, "uid=vmail gid=vmail home=/var/lib/vmail/mail/%n"
-	end
-
-	return dovecot.auth.USERDB_RESULT_USER_UNKNOWN, "no such user"
-end
-