> I don't know why there could be any criticism because imho it has absolutely no negative impact. That is not at clear. In fact, Postel's law itself has been criticised because being liberal in what you accept can allow errors to go undetected, with possible data corruption or worse (security holes, in the case of the Internet) as a consequence. I wish it were called Postel's *guideline* instead of a *law*. And to be clear, I have nothing against the deviation from the standard discussed in this thread. But I would be surprised to learn it had never happened that someone, somewhere, got bitten by it. Hopefully not too seriously.