I'm tired of arguing about this. Engineers agree on standards for a good reason, yes, but they also agree on "should not" rather than "must not" for a good reas

I'm tired of arguing about this. Engineers agree on standards for a good reason, yes, but they also agree on "should not" rather than "must not" for a good reason too. I'll leave this as my last comment, but you might want to read the post-mortem. Turns out their implementation of the RFC wasn't even buggy. They just messed up the domain name in the configuration. Which you can only be resilient to by retrying the request sometime later.