Vikash Nehra 
If you are self-hosting email infrastructure in 2026, two names keep coming up in every discussion: Stalwart and Postal. Choosing between stalwart vs postal is not a question of which one is “better” — it is a question of what you are actually building. One is a complete all-in-one mail server; the other is a … Read more
Adding iRedMail multiple domains is built in from the start: every additional domain is a virtual domain in the MySQL (or LDAP) backend, sharing the same Postfix, Dovecot, Amavisd, and ClamAV stack. This guide shows you how to add new domains safely: registering them in the backend, creating mailboxes, pointing DNS records, signing mail with … Read more
If you are choosing a self-hosted mail server for a small business or a personal domain, the mailcow vs mail-in-a-box debate comes up almost immediately. Both are free, open-source, and turn a single VPS into a complete mail stack — but they take very different paths to get there. Mailcow ships as a set of … Read more
If you want a full-featured mail server that installs in minutes instead of days, this guide will show you exactly how to install Mailcow Debian 12 with Docker. Mailcow is a modern, Docker-based mail suite that bundles Postfix, Dovecot, SOGo webmail, and Rspamd spam filtering into one clean, manageable package — giving you a complete … Read more
Choosing the right zimbra backup strategies is the difference between a bad day and a business-ending disaster. Zimbra stores mailboxes, LDAP configuration, database metadata, and message stores across several components — so a single mysqldump or a careless rsync of a running server is not a backup. In this guide, you will learn the backup … Read more
Learning how to migrate Zimbra Carbonio servers is becoming an essential skill for mail server administrators. With Zimbra’s open-source edition seeing less active development, many organizations want a modern, actively maintained alternative — and Zextras Carbonio Community Edition is the natural successor, sharing Zimbra’s DNA while adding a refreshed architecture. In this guide, you will … Read more
Choosing between Zimbra and Carbonio is a common dilemma for businesses planning a self-hosted email and collaboration platform. This detailed Zimbra vs Carbonio comparison breaks down everything that actually matters — licensing, features, web client experience, administration, mobile apps, scalability, community support, and migration difficulty — so you can pick the platform that fits your … Read more
When you run your own email infrastructure, the difference between a healthy mail server and a silent disaster is visibility. If you want to monitor PowerMTA Grafana dashboards, you need to turn PowerMTA’s accounting data into metrics that Grafana can chart — throughput, queue depth, bounces, and per-domain delivery rates — so problems surface before … Read more
If you send bulk email with PowerMTA, bounces are part of daily life. The difference between a healthy sender and a ruined IP reputation often comes down to how well you handle them. This PowerMTA bounce processing setup guide walks you through the complete workflow: understanding hard and soft bounces, reading PowerMTA accounting files, configuring … Read more
Learning to install PowerMTA AlmaLinux is the fastest way to get a high-performance, self-hosted email server running on Red Hat’s most popular free clone. PowerMTA is the industry-standard mail transfer agent used by high-volume senders for its unmatched deliverability controls, delivery speed, and per-domain reputation management. AlmaLinux 9, with its RHEL binary compatibility and long … Read more