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@msimerson

Matt Simerson

msimerson
Seattle, WA

I am a software engineer and systems architect specializing in high-performance email and DNS infrastructure. My work focuses on building and maintaining scalable, open-source solutions that power reliable internet communications.

I am a lead maintainer of Haraka, a fast, event-driven SMTP server, and Mail::DMARC, a comprehensive DMARC implementation. My other primary projects include NicTool, a full-featured DNS management suite, and Mail Toaster.

Open-source maintenance is a significant commitment. While I remain dedicated to the ecosystem, I prioritize my time and development efforts toward the projects that provide the most tangible value to the community. Sponsorships serve as a direct signal of which tools are most critical to your operations, allowing me to focus my energy where it is most impactful.

Current sponsors 1

@smtplabs
Past sponsors 4
Private Sponsor
@NDCHost
@mirusresearch
@Pro-IT-Charlotte

Featured work

  1. haraka/Haraka

    A fast, highly extensible, and event driven SMTP server

    JavaScript 5,568
  2. NicTool/NicTool

    NicTool: a DNS management solution

    Perl 190
  3. msimerson/sentry

    Bruteforce attack blocker (ssh, FTP, SMTP, and more)

    Perl 64
  4. Shell 54
  5. msimerson/mail-dmarc

    Mail::DMARC, a complete DMARC implementation in Perl

    Perl 38
  6. NicTool/dns-resource-record

    DNS resource record importer, exporter, validator

    JavaScript 8

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