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Stalwart Blog

Introducing Distributed SMTP Queues & Expressions

- 3 min read
Mauro D.
Mauro D.
Project Maintainer

This Valentine’s Day, we’re not just celebrating love and companionship; we’re also celebrating the groundbreaking advancements in the Stalwart Mail Server with the release of version 0.6.0. In a world where reliability and flexibility in mail server management are more critical than ever, Stalwart Mail Server takes a significant leap forward with the introduction of distributed SMTP queues and the integration of expressions in configuration files. Let’s delve into how these features transform your mail server experience, making it more robust, efficient, and customizable than ever before.

ACME Integration for Effortless TLS Certificates

- 2 min read
Mauro D.
Mauro D.
Project Maintainer

ACME (Automatic Certificate Management Environment) represents a breakthrough in managing TLS (Transport Layer Security) certificates. This protocol automates the process of obtaining, installing, and renewing TLS/SSL certificates, which are crucial for securing network communications. TLS certificates provide authentication and encryption, ensuring that data transferred between users and servers remains private and secure.

ACME’s ability to automate these tasks greatly simplifies certificate management, particularly for services like mail servers that require ongoing security maintenance. The protocol interacts with Certificate Authorities (CAs) such as Let’s Encrypt to automate the verification of domain ownership and the issuance of certificates, significantly reducing manual effort and the risk of human error.

We are thrilled to announce the release of Stalwart Mail Server 0.5.2, which brings two significant advancements: the integration of the ACME protocol for automatic TLS certificate deployment and support for the HAProxy Protocol. These features mark a substantial step forward in our commitment to enhancing the security and efficiency of Stalwart Mail Server.

SMTP Smuggling: What it is and how Stalwart is protected

- 3 min read
Mauro D.
Mauro D.
Project Maintainer

In the world of email security, a recent concern has arisen known as SMTP Smuggling, a vulnerability that can be exploited to spoof emails. This blog post will explain what SMTP smuggling is and how Stalwart Mail Server is designed to be immune to this vulnerability. We’ll also discuss a new feature we’ve implemented to protect other servers that might be vulnerable.

Elevating Performance and Flexibility

- 3 min read
Mauro D.
Mauro D.
Project Maintainer

We are excited to announce the release of Stalwart Mail Server v0.5.0. As we approach the end of the year, this significant update marks a major advancement in our journey to provide a robust, efficient, and versatile mail server solution. This latest version incorporates a range of performance enhancements, storage layer improvements, and new features, designed to elevate your email server experience.