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Postfix VS OpenSMTPD

Compare Postfix VS OpenSMTPD and see what are their differences

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Postfix logo Postfix

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

OpenSMTPD logo OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...
  • Postfix Landing page
    Landing page //
    2023-10-15
  • OpenSMTPD Landing page
    Landing page //
    2019-03-05

Postfix videos

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OpenSMTPD videos

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DAY[0] Episode #31 - kr00k, GhostCat, and more issues from NordVPN, Samsung, OpenSMTPd

Category Popularity

0-100% (relative to Postfix and OpenSMTPD)

Postfix

OpenSMTPD

Email
82 82%
Email
18% 18
SMTP Server
79 79%
SMTP Server
21% 21
Self-hosted Email
100 100%
Self-hosted Email
0% 0
MTA
65 65%
MTA
35% 35

User comments

Share your experience with using Postfix and OpenSMTPD. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare Postfix and OpenSMTPD

Postfix Reviews

10 Microsoft Exchange Server Alternatives
Postfix is an MTA that allows the user to receive and deliver electronic mail. The platform is open-sourced that is easy to administer, attempts to be fast, and a secure way for the usage of EM. It is also known by the names of IBM Secure Mailer and VMailer. Many of the systems that support Postfix runs such as AIX, BSD, HP-UX, LINUX, macOS, Solaris, Tru64 UNIX, etc. The...
Source: www.justalternativeto.com
15 Best iRedMail Alternatives 2021
Postfix is very emphatic when it comes to security. Like iRedMail, it is able to encrypt your sessions and perform certificate-based authentication to keep your mail services secure, private, and protected. Postfix also offers stress adaptive features and various content inspection methods to choose from.
Source: rigorousthemes.com

OpenSMTPD Reviews

Best Free and Open Source Alternatives to Microsoft Exchange Server
OpenSMTPD is an implementation of the server-side SMTP protocol, with some additional standard extensions. Its design goals include security, reliability, ease of configuration, and support for common use cases.
Source: www.linuxlinks.com

Social recommendations and mentions

Based on our record, OpenSMTPD should be more popular than Postfix. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Postfix mentions (1)

  • OVH VPS Postfix can't receive external emails
    Read the documentation on postfix.org and/or buy one of the many available Postfix books (it really helps to understand the Postfix philosophy). Source: about 3 years ago

OpenSMTPD mentions (2)

  • Has anyone setup a Linux based internal only smtp relay?
    I've had something of the same experience with Postfix, u/0x29aNull. Check out OpenSMTPD. It is lightweight and standards compliant. I know that there are packages for Debian and Alpine Linux. There may also be ones for Fedora/RHEL derivatives. I use it in my environment on OpenBSD. Source: about 1 year ago
  • DKIM Migration: Rpamd instead of DKIMproxy out on OpenBSD / OpenSMTPD
    When I installed Rspamd with on OpenBSD / OpenSMTPD the other day, DKIMProxy out (dkimproxy_out daemon), which had been got via OpenBSD Ports package system, was used to add DKIM signatures to mails in order to improve security on emails. - Source: dev.to / almost 3 years ago

What are some alternatives?

When comparing Postfix and OpenSMTPD, you can also consider the following products

iRedMail - A fully fledged, free email server solution, an open source project (GPL v2).

sSMTP - sSMTP is a simple MTA to deliver mail from a computer to a mail server.

Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

Exim - Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

Sendmail - Sendmail is a general purpose internetwork email routing facility that supports many kinds of...

mailcow - An open source mailserver suite.

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