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.

Feature	OpenSMTPD	Sendmail
Overall Score	N/A	N/A
Primary Category	Network & Admin	Network & Admin

Product Overview

OpenSMTPD

Description: 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.

Sendmail

Description: 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.

Key Features Comparison

OpenSMTPD Features

• 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

Sendmail Features

• 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

Pros & Cons Analysis

OpenSMTPD

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

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

Pricing Comparison

OpenSMTPD

• Open Source

Sendmail

• Open Source