OpenSMTPD vs Sendmail

Struggling to choose between OpenSMTPD and Sendmail? 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, Sendmail is a Network & Admin product tagged with email, smtp, mta, mail-transfer-agent.

Its standout features include Mail Transfer Agent (MTA) for routing and delivering email, Runs as a daemon on Unix/Linux systems, Uses SMTP protocol for sending outgoing mail, Uses a flexible configuration file to control mail routing, Supports aliases, mailing lists, forwarding, filtering, Integrates with LDAP directories for authentication, Includes anti-spam and anti-virus capabilities, and it shines with pros like Widely used and well established, Open source and free, Highly scalable and reliable, Flexible configuration options, Supports security features like TLS, Integrates with other tools via Milter interface.

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


Sendmail

Sendmail

Sendmail is a widely used open-source mail transfer agent (MTA) for routing and delivering email on Unix and Linux systems. It handles routing emails between mail servers and delivers them to local users' mailboxes.

Categories:
email smtp mta mail-transfer-agent

Sendmail Features

  1. Mail Transfer Agent (MTA) for routing and delivering email
  2. Runs as a daemon on Unix/Linux systems
  3. Uses SMTP protocol for sending outgoing mail
  4. Uses a flexible configuration file to control mail routing
  5. Supports aliases, mailing lists, forwarding, filtering
  6. Integrates with LDAP directories for authentication
  7. Includes anti-spam and anti-virus capabilities

Pricing

  • Open Source

Pros

Widely used and well established

Open source and free

Highly scalable and reliable

Flexible configuration options

Supports security features like TLS

Integrates with other tools via Milter interface

Cons

Complex configuration syntax

Steep learning curve

Requires expertise to properly secure

Not user friendly administrative interface