Let's Encrypt! SSL certificates no longer accepted?

[Roger Lipscombe]

On Mon, 27 Sept 2021 at 14:41, Jeroen Koops <koops.j@REDACTED> wrote:
> One of the changes was the removal of the DST Root CA X3 root-certificate. This certificate is used as a root by Let's Encrypt certificates, and is almost expiring.
> Has anyone else seen this issue? Is there a solution?

See https://blog.voltone.net/post/29 and https://blog.voltone.net/post/30