@paul_ipv6 Including Microsoft, it seems. They've now admitted that it was unintentional, but 5 days later, and they still haven't rolled it back.
But you're absolutely right: if we reject our customers' email, that's our problem. If Gmail/Microsoft/Yahoo reject their customers' email, that's our problem.
We're always amazed that so many people use them, given how much legitimate email they reject (or accept and discard), but I guess people literally don't know what they're missing.
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