11 posts tagged with "email"

As we step into 2025, we're excited to share some significant enhancements to Stalwart Mail Server version 0.11.0, starting with a complete overhaul of its built-in spam filter. These changes bring dramatic improvements in speed, ease of use, and flexibility while addressing feedback from our community. Here’s a closer look at what’s new.

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.

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.

In today's digital age, the safety and authenticity of your emails are paramount. With that in mind, we're happy to announce the release of the Spam and Phishing filter in Stalwart Mail Server v0.4.0. This release is packed with features that not only enhance your email security but also ensure a seamless communication experience.

Here's a deep dive into what's new:

• Comprehensive Filtering Rules: We've crafted a set of rules that stand shoulder-to-shoulder with the best solutions out there.
• Statistical Spam Classifier: Empower your server with a classifier that constantly learns, adapts, and keeps spam at bay.
• DNS Blocklists (DNSBLs): Safeguard your users' inboxes from notorious spammers through meticulous checks on IP addresses, domains, and hashes.
• Collaborative Digest-Based Filtering: By integrating digest-based spam filtering, we ensure even greater accuracy in weeding out unwanted emails.
• Phishing Protection: Defend against cunning phishing tactics, from homographic URL attacks to deceptive sender spoofing.
• Trusted Replies Tracking: By recognizing and prioritizing genuine replies, we ensure your genuine conversations remain uninterrupted.
• Sender Reputation: An automated system that assesses sender credibility based on their IP, ASN, domain, and email address.
• Greylisting: An added shield against spam, by temporarily holding back unfamiliar senders.
• Spam Traps: Crafty decoy email addresses that help us catch and scrutinize spam, ensuring your users' inboxes remain clutter-free.
• Built-in & Ready to Roll: No dependency on third-party software. Unbox and deploy – it's that simple!

Today we are announcing the latest release of Stalwart Mail Server: version 0.3.6. This update includes multiple enhancements to the Sieve filtering language, including the ability to evaluate arithmetical and logical expressions, and fetch data from SQL or LDAP databases to Sieve variables.

In the digital age where privacy and data protection are paramount, we continually strive to enhance the security features offered by Stalwart Mail Server. Today, we're thrilled to announce our latest upgrade – Encryption at Rest!

It’s official! We are proud to announce the release of Stalwart SMTP, the next-generation email server solution written in Rust for businesses, organizations, and individuals alike.

We are happy to announce Stalwart JMAP, an open-source JSON Meta Application Protocol server written in Rust that aims to be scalable, robust and secure.

Building and sending e-mails securely does not have to be complicated. Today the mail-send crate was released including the following features:

Back in November we released mail-parser, a Rust library to parse MIME e-mail messages of any complexity. Today we are proud to announce the release of mail-builder, a simple yet powerful library to build RFC5322 e-mail messages with MIME support.