Best self hosted mail server

Choosing the best self-hosted mail server depends on several factors such as your technical expertise, the size of your organization, and the features you need. Here are some popular options:

  1. Postfix: A widely used, open-source mail transfer agent (MTA) that's easy to set up and configure. It's a good choice for small to medium-sized organizations.
  2. Exim: Another popular open-source MTA that's known for its flexibility and customization options. It's a good choice for larger organizations or those with complex email requirements.
  3. OpenSMTPD: A modern, open-source MTA that's designed to be secure and easy to use. It's a good choice for those who want a simple, yet powerful mail server.
  4. Mail-in-a-Box: A self-contained, open-source mail server that includes Postfix, Dovecot, and other components. It's a good choice for those who want a hassle-free, all-in-one solution.
  5. iRedMail: A popular, open-source mail server that's designed to be easy to set up and use. It includes Postfix, Dovecot, and other components, and is a good choice for small to medium-sized organizations.
  6. Mailserver: A self-hosted mail server that's designed to be easy to use and configure. It includes Postfix, Dovecot, and other components, and is a good choice for those who want a simple, yet powerful mail server.

When choosing a self-hosted mail server, consider the following factors:

  1. Security: Look for a solution that includes robust security features, such as encryption, authentication, and spam filtering.
  2. Scalability: Choose a solution that can grow with your organization, and can handle a large volume of email traffic.
  3. Ease of use: Consider a solution that's easy to set up and configure, even for those with limited technical expertise.
  4. Customization: Look for a solution that allows for customization and flexibility, so you can tailor it to your organization's specific needs.
  5. Integration: Consider a solution that integrates well with other services, such as calendar and contact management software.

Some popular self-hosted mail server distributions include:

  1. Ubuntu Mail Server: A pre-configured, open-source mail server distribution based on Ubuntu.
  2. CentOS Mail Server: A pre-configured, open-source mail server distribution based on CentOS.
  3. Debian Mail Server: A pre-configured, open-source mail server distribution based on Debian.

Remember to always follow best practices for securing your self-hosted mail server, including:

  1. Keep your software up to date: Regularly update your mail server software to ensure you have the latest security patches and features.
  2. Use strong passwords: Use strong, unique passwords for your mail server and other services.
  3. Enable encryption: Enable encryption for email traffic to protect your users' data.
  4. Monitor your server: Regularly monitor your mail server for signs of compromise or unusual activity.
  5. Back up your data: Regularly back up your mail server data to ensure you can recover in case of a disaster.