Top Postfix Alternatives and Overview

Postfix is an incredibly secure, free, and open-source email client designed for business-critical information transfer processes. It was initially developed by IBM as their in-house email transfer agent, which has given it the dependability of proprietary software, and it is now being developed and maintained by Google. It can smoothly run on all OSs that have an in-built C compiler and are UNIX-like in nature, making it highly cross-platform as well.

A widely-used solution for emailing woes

Postfix is designed in C, which means that it is not only usable on nearly all types of Linux of macOS servers, but it is also very versatile and light on system resources. It is very easy to install in these systems and is just as easy to set up. Unlike other email transfer agents, its security is inherently top-notch, yet setting up even the most advanced security systems in Postfix is a breeze, thanks to an intuitive setup wizard. So no professional help is required to get the system ready, making it a high ROI application. 

The most reliable security features available in a transfer agent

The other thing that Postfix is famous for, apart from its simplicity, is its security features. Postfix is equipped with several types of mechanisms to protect mailboxes from viruses and spams. These mechanisms are regularly updated with insights gathered from new types of exploits arising every day in the internet world. New security features are also added with every major update, making it genuinely adaptable and, thus, reliable. Features to stop junk mails from entering include anti-zombie email protection, greylisting and SPF support, and various types of filters. It also has several features that disallow it to overload.

Support for an extensive number of protocols

Postfix has support for various emailing protocols, making it one of the most comprehensive transfer clients to date. It supports popular email protocols like SMTP in all its forms. It uses HAproxy as a mechanism to balance the system resources and provide a smooth and stable mailbox. It also has security verification methods using various SMTP certifications and TLS authentication. For proxy purposes, it supports Nginx.