[mcpherrinm]

I am not implying that, but merely defining what the WebPKI is and where we fit into it.

Let's Encrypt's primary goal is to encrypt the web, and most of our decision making is based on that. It isn't so much about HTTP as it is the ecosystem.

You can use our certificates for any TLS Server use-case. I wouldn't suggest using our certificates for things which aren't TLS servers, though.

[eqvinox]

Thanks for the clarification. I guess I'll have to find a few friends to run an ACME service together with. Unfortunately, in most cases the certificate store is global across applications, so presumably we'll hit a brick wall with browser requirements.

(The services are all TLS based. They are just not HTTP based, and CRLs are generally delivered via HTTP. And I'm not going to wrangle a HTTP client into my mail server, or worse, postgres instance. The latter could also work with a local CA, it's primarily SMTP that doesn't.)

(...or I just ignore revocation and cross my fingers it'll never come up...)

[eqvinox]

Wait. What. Let's Encrypt CRLs are only available to browser vendors? So you can't even do a CRL check in an SMTP server if you wanted to?

> Our new CRL URLs will be disclosed only in CCADB, so that the Apple and Mozilla root programs can consume them without exposing them to potentially large download traffic from the rest of the internet at large.

https://letsencrypt.org/2022/09/07/new-life-for-crls.html

[mcpherrinm]

That’ll change with OCSP depreciation, as certificates are required to contain one or the other of OCSP or CRLs.