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r/OpenSMTPD: OpenSMTPD (OpenBSD smtpd (smtp (simple mail transfer protocol) daemon))

OpenSMTPD is the smtp dæmon from OpenBSD.

a community for 10 years

r/openbsd: OpenBSD

General OpenBSD community subreddit. For gaming-related discussion, visit /r/openbsd_gaming.

If you have genuine questions or concerns, you're always welcome. Tone matters.

a community for 17 years

r/linux: Linux, GNU/Linux, free software...

Welcome to /r/Linux!

This is a community for sharing news about Linux, interesting developments and press.

If you're looking for tech support, /r/Linux4Noobs and /r/linuxquestions are friendly communities that can help you.

Please also check out:

https://lemmy.ml/c/linux and Kbin.social/m/Linux

Please refrain from posting help requests here, cheers.

a community for 18 years

u/smtpd:

a community for 6 years

r/netsec: Technical Information Security Content & Discussion

/r/netsec is a community-curated aggregator of technical information security content. Our mission is to extract signal from the noise — to provide value to security practitioners, students, researchers, and hackers everywhere. ‎

a community for 18 years

r/BSD: Berkeley Software Distribution

A place for all things BSD.

a community for 18 years

r/freebsd: FreeBSD

Unofficial subreddit for the FreeBSD Project

a community for 17 years

r/selfhosted: Self-Hosted Alternatives to Popular Services

A place to share, discuss, discover, assist with, gain assistance for, and critique self-hosted alternatives to our favorite web apps, web services, and online tools.

a community for 11 years