All I understood was that you seemed unsure about the purpose of the domain check, so I pointed you in the right direction. Sorry if that came off as condescending.

Well, since you didn't mean it then I am the one who is sorry. I have obviously misjudged you, overreacted and misunderstood your phrasing.

I apologize and will try to do better next time.

Did not register as condescension to me