---
title: "2010 10 03 python one liner debug mail server"
description: "Need a pretend mail server that you can use for debugging? Try this:"
type: skill
canonical_url: https://claudary.paisolsolutions.com/skills/2010-10-03-python-one-liner-debug-mail-server
source: "Claudary"
difficulty: intermediate
author: "Claude Code Knowledge Pack"
date: 2026-07-10T10:58:46.492Z
license: CC-BY-4.0
attribution: "2010 10 03 python one liner debug mail server — Claudary (https://claudary.paisolsolutions.com/skills/2010-10-03-python-one-liner-debug-mail-server)"
---

# 2010 10 03 python one liner debug mail server
Need a pretend mail server that you can use for debugging? Try this:

## Overview

---
title: "Python One-Liner: Debug Mail Server"
date: 2010-10-03
draft: false
slug: python-one-liner-debug-mail-server
tags: ["mail", "python", "software development", "system administration"]
description: I love a good Python one-liner...
---

Need a pretend mail server that you can use for debugging? Try this:


    ```bash
    python -m smtpd -n -c DebuggingServer localhost:1025
```


It listens on port 1025 for local connections.

---

Source: [Claudary](https://claudary.paisolsolutions.com/skills/2010-10-03-python-one-liner-debug-mail-server) · https://claudary.paisolsolutions.com