SMTP
251 User Not Local 응답 모의 테스트
The recipient is not local to the server, but it will forward the message to the specified forwarding address. The server acts as a relay for this recipient.
전체 레퍼런스 보기 →1 HTTP 응답
HTTP/1.1 251 User Not Local
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 21
{
"status": "success"
}
2 curl로 테스트하기
curl -i https://httpbin.org/status/251
3 프레임워크에서 251 User Not Local 반환하기
django
from django.http import JsonResponse
def my_view(request):
return JsonResponse(
{"status": "success"},
status=251,
)
flask
from flask import Flask, jsonify
app = Flask(__name__)
@app.route("/endpoint")
def my_endpoint():
return jsonify({"status": "success"}), 251
fastapi
from fastapi import FastAPI
from fastapi.responses import JSONResponse
app = FastAPI()
@app.get("/endpoint")
def my_endpoint():
return JSONResponse(
content={"status": "success"},
status_code=251,
)
express.js
// Express.js
app.get('/endpoint', (req, res) => {
res.status(251).json({"status": "success"});
});
spring boot
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.Map;
@RestController
public class MyController {
@GetMapping("/endpoint")
public ResponseEntity<Map<String, Object>> myEndpoint() {
return ResponseEntity
.status(251)
.body(Map.of("error", "user_not_local",
"message", "User Not Local"));
}
}
go net/http
package main
import (
"encoding/json"
"net/http"
)
func myHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(251)
json.NewEncoder(w).Encode(map[string]string{
"error": "user_not_local",
"message": "User Not Local",
})
}
ruby on rails
class MyController < ApplicationController
def my_action
render json: {"status": "success"},
status: :user_not_local
end
end
asp.net core
// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
Results.Json(
new { error = "user_not_local", message = "User Not Local" },
statusCode: 251
)
);