Windows Live Mail revocation warning

[pfg]

@fas

I understand the problem is not directly solvable, but for example, an approach to Microsoft is something LE could do that wouldn't have an effect if it came from me. I can certainly try, but they will just say "unsupported, unsupported".

Microsoft is pretty stubborn when it comes to fixing things in products that aren't supported anymore. Probably rightfully so - Pandora's box and all that. I doubt this will be successful no matter who asks, especially since - from Microsoft's perspective - workarounds (like using a CA with CRL support) exist.

@fas

The XP issue was also effectively deemed "impossible to solve" when it was first raised! I'm not looking for miracles, but this is a genuine problem. It may be small in percentage terms, but there must still be millions of active Live mail users out there, for whom images work in emails except where the sender uses a LE certificate.

I don't think this is accurate. From what I recall, this is the first statement regarding XP support. Again, there's no similar solution here, so there's really nothing Let's Encrypt can do, other than document the issue (which has happened).