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Article URL: https://i0exception.substack.com/p/the-other-side-of-on-call

Comments URL: https://news.ycombinator.com/item?id=48289661

Points: 1

# Comments: 0

Article URL: https://www.theverge.com/ai-artificial-intelligence/937801/pope-leo-xiv-magnifica-humanitas-ai-pangram

Comments URL: https://news.ycombinator.com/item?id=48289660

Points: 2

# Comments: 1

Article URL: https://jonharris665470.substack.com/p/what-the-hell-are-we-building-here

Comments URL: https://news.ycombinator.com/item?id=48289645

Points: 1

# Comments: 0

Article URL: https://arxiv.org/abs/2605.22763

Comments URL: https://news.ycombinator.com/item?id=48289633

Points: 1

# Comments: 0

Article URL: https://www.theglobeandmail.com/business/article-ai-oversight-artificial-intelligence-shareholder-tech/

Comments URL: https://news.ycombinator.com/item?id=48289630

Points: 2

# Comments: 1

Introducing Posthorn, a self hosted email gateway. One docker container (or Go binary) between every self hosted app on your VPS and your transactional email provider. Set up Posthorn once, point your apps to it, done.

I was trying to deploy Ghost on a DigitalOcean droplet and found that DO and many different VPS services have started to block the default SMTP ports to try to combat the various types of abuse they get. To actually configure my app, I had to hack together a Postfix relay.

In another project, I had a static site which had a contact form, but my free Formspree account was occasionally hitting usage limits and I desperately wanted some of the anti-spam features they had gated behind their paid accounts so I put together a caddy module to catch HTTP POSTs and bounce them to my provider.

I kept bumping into these same email issues. Many of the services I wanted to host (Gitea, Mastodon, Umami, Comentario) ran into the same limitations. This felt like a really common issue that had no good solution.

Posthorn is what I built to solve this. It's a small Go binary (or 10 MB docker image) that sits between your self hosted apps and your transactional email provider of choice (shipping with support for Postmark, Resend, Mailgun, Amazon SES or an outbound SMTP relay). It also accepts POSTs from HTML forms to support static site needs while adding security layers such as honeypot fields, origin checks and IP rate limiting. There's also a JSON HTTP API that supports Bearer auth for backend scripts or cron jobs that just want a /send endpoint.

I now use this personally in multiple scenarios and I've spent a lot of time beating this up and testing against what I can validate. I'd love to hear how this might be useful for you, what breaks and any feedback you might have. It's open source under Apache 2.0 and I'd love contributions. I'm planning to support and grow this for the long haul.

Code: https://github.com/craigmccaskill/posthorn

Docs: https://posthorn.dev/

Longer write up: https://craigmccaskill.com/introducing-posthorn/

Previous HN discussion on the exact issue I'm trying to solve: https://news.ycombinator.com/item?id=43620318

Comments URL: https://news.ycombinator.com/item?id=48289624

Points: 1

# Comments: 0

Article URL: https://stewartraceway.org/

Comments URL: https://news.ycombinator.com/item?id=48289611

Points: 1

# Comments: 0

Article URL: https://www.hkcert.org/security-bulletin/microsoft-edge-multiple-vulnerabilities_20260527

Comments URL: https://news.ycombinator.com/item?id=48289609

Points: 1

# Comments: 0

Article URL: https://medium.com/@paul.gedeon/tintello-judgment-is-harder-to-delegate-than-code-54fa16d09508

Comments URL: https://news.ycombinator.com/item?id=48289603

Points: 1

# Comments: 0

Article URL: https://www.youtube.com/watch?v=zokKqP0plrM

Comments URL: https://news.ycombinator.com/item?id=48289601

Points: 1

# Comments: 0

Article URL: https://www.nytimes.com/2026/05/26/opinion/pope-leo-encyclical-ai.html

Comments URL: https://news.ycombinator.com/item?id=48289594

Points: 1

# Comments: 1

Article URL: https://decentered.org/studio

Comments URL: https://news.ycombinator.com/item?id=48289592

Points: 2

# Comments: 1

Article URL: https://www.bloomberg.com/news/articles/2026-05-23/hyperscaler-debt-flood-brings-derivatives-bonanza-credit-weekly

Comments URL: https://news.ycombinator.com/item?id=48289587

Points: 1

# Comments: 0

Article URL: https://www.mrguyinvests.com

Comments URL: https://news.ycombinator.com/item?id=48289562

Points: 1

# Comments: 0

Article URL: https://maxmautner.com/2026/05/25/speed-surveying-neighbor.html

Comments URL: https://news.ycombinator.com/item?id=48289553

Points: 1

# Comments: 0

Article URL: https://janko.io/extending-ruby-lsp-with-prism/

Comments URL: https://news.ycombinator.com/item?id=48289551

Points: 1

# Comments: 0

Article URL: https://zenodo.org/records/20389817

Comments URL: https://news.ycombinator.com/item?id=48289544

Points: 1

# Comments: 0

Article URL: https://flashml-org.github.io/

Comments URL: https://news.ycombinator.com/item?id=48289543

Points: 1

# Comments: 0

Article URL: https://arstechnica.com/tech-policy/2026/05/fbi-easily-nabs-man-selling-sexy-deepfakes-who-used-his-own-photo-in-profile/

Comments URL: https://news.ycombinator.com/item?id=48289479

Points: 1

# Comments: 0