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OpenSMTPD (also known as OpenBSD SMTP Server) is a Unix daemon implementing the Simple Mail Transfer Protocol to deliver messages on a local machine or to relay them to other SMTP servers. It was publicly released on 17 March 2013 with version number 5.3, after being in development since late 2008.
The analysis highlights History, Overview and Goals as prominent areas in the source structure around OpenSMTPD.
Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.
Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.
High-confidence facts extracted from structured source data. Use them as anchors for further research.
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The extracted context around OpenSMTPD shows recurring relationship patterns in the source. For example, OpenSMTPD → Code, CPU, OpenBSD, Security, SMTP Another extracted example is OpenSMTPD → October, OpenBSD, SMTP, Version. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
openbsd version smtp security code mail project released use goals portable daemon netbsd freebsd linux development developed charles longeau support
TTTA extracted 21 structured relationships around OpenSMTPD. Examples in this analysis include OpenSMTPD → As of → August 2025 and OpenSMTPD → Developer → The OpenBSD Project. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| OpenSMTPD | As of | August 2025 | 1.00 | infobox |
| OpenSMTPD | Developer | The OpenBSD Project | 1.00 | infobox |
| OpenSMTPD | License | ISC | 1.00 | infobox |
| OpenSMTPD | Operating system | OpenBSD, FreeBSD, NetBSD, Linux, macOS | 1.00 | infobox |
| OpenSMTPD | Platform | Cross-platform | 1.00 | infobox |
| OpenSMTPD | Release | 5.3 / 17 March 2013; 13 years ago (2013-03-17) | 1.00 | infobox |
| OpenSMTPD | Repository | github.com/OpenSMTPD | 1.00 | infobox |
| OpenSMTPD | Stable release | 7.7.0p0 / 15 May 2025; 15 months ago (2025-05-15) | 1.00 | infobox |
| OpenSMTPD | Standard | RFC 5321 | 1.00 | infobox |
| OpenSMTPD | Type | Mail transfer agent | 1.00 | infobox |
| OpenSMTPD | Website | www.opensmtpd.org | 1.00 | infobox |
| OpenSMTPD | Written in | C | 1.00 | infobox |
The concept neighborhoods around OpenSMTPD bring nearby vocabulary together. In this analysis, examples include Smtp, Daemon and Mail. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For OpenSMTPD, one of the stronger structural bridges in this analysis connects OpenSMTPD with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around OpenSMTPD to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Overview & Goals, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — OpenSMTPD · EN edition · Analysis: TopicsToTalkAbout
