OpenSMTPD vs Exim

Struggling to choose between OpenSMTPD and Exim? Both products offer unique advantages, making it a tough decision.

OpenSMTPD is a Network & Admin solution with tags like smtp, mail-server, email, linux, bsd, open-source.

It boasts features such as Open source SMTP server, Supports SMTP over TLS/SSL, Milter support for spam and virus filtering, Daemon mode for background operation, IPv4 and IPv6 support, SMTP AUTH login, plain and cram-md5, STARTTLS support, DKIM signing and verification, SMTP pipelining, Queue control and delivery modes, Virtual domains and users, SMTP client mode and pros including Free and open source, Secure - supports encryption and authentication, Extensible and customizable via filters, Lightweight and high performance, Cross-platform - runs on Linux and BSD.

On the other hand, Exim is a Network & Admin product tagged with mail-transfer-agent, mta, email, server.

Its standout features include SMTP server, SMTP client, Support for SMTP authentication, Support for TLS encryption, Content scanning and filtering, Virtual domains, Aliases, Mail relay control, Access control lists, Spam and virus scanning, and it shines with pros like Lightweight and fast, Very flexible configuration, Good security features, Scales well for large volumes of email, Wide platform support.

To help you make an informed decision, we've compiled a comprehensive comparison of these two products, delving into their features, pros, cons, pricing, and more. Get ready to explore the nuances that set them apart and determine which one is the perfect fit for your requirements.

OpenSMTPD

OpenSMTPD

OpenSMTPD is an open source SMTP server daemon for Linux and BSD operating systems. It aims to be a free, secure, and featureful SMTP server for both hosting providers and end users.

Categories:
smtp mail-server email linux bsd open-source

OpenSMTPD Features

  1. Open source SMTP server
  2. Supports SMTP over TLS/SSL
  3. Milter support for spam and virus filtering
  4. Daemon mode for background operation
  5. IPv4 and IPv6 support
  6. SMTP AUTH login, plain and cram-md5
  7. STARTTLS support
  8. DKIM signing and verification
  9. SMTP pipelining
  10. Queue control and delivery modes
  11. Virtual domains and users
  12. SMTP client mode

Pricing

  • Open Source

Pros

Free and open source

Secure - supports encryption and authentication

Extensible and customizable via filters

Lightweight and high performance

Cross-platform - runs on Linux and BSD

Cons

Limited user interface/admin dashboard

Steeper learning curve than commercial options

Requires more technical expertise to setup and manage

Lacks some enterprise features found in commercial SMTP servers


Exim

Exim

Exim is an open source mail transfer agent (MTA) developed for use on Unix systems. It is lightweight, flexible, and one of the most popular MTAs for Linux and BSD systems. Exim aims to be secure, scalable, and easy to configure.

Categories:
mail-transfer-agent mta email server

Exim Features

  1. SMTP server
  2. SMTP client
  3. Support for SMTP authentication
  4. Support for TLS encryption
  5. Content scanning and filtering
  6. Virtual domains
  7. Aliases
  8. Mail relay control
  9. Access control lists
  10. Spam and virus scanning

Pricing

  • Open Source

Pros

Lightweight and fast

Very flexible configuration

Good security features

Scales well for large volumes of email

Wide platform support

Cons

Configuration can be complex

Limited user-friendly interfaces

Steeper learning curve than some alternatives