sundiver

Yes, all .de domains down because of DNSSEC failure at Denic https://dnsviz.net/d/de/dnssec/

What I couldn't see, or what wasn't mentioned, is the imminent collapse of the Gulf Stream. I had read that this would paradoxically lead to a "new ice age" for Western and Northern Europe in the next 100 years. Is this scenario ruled out by science after all, or is it simply not taken into account here?

There are reasons to not block these emails and there are good reasons to block them (but you better not admit that on HN if you do). Number 1 reason to reject is: these users never (99.99%) become customers.

That said: http://cleanli.st

An API (beta) to validate email addresses. It knows and dynamically detects thousands of dispoable email domains (including all mailinator domains).