I once had trouble setting up a gmail smtp configuration on a computer in the US from an account originally set up in Canada. It was because I was trying to use smtp outside of the region. I don't remember what I did to resolve it, but it took a fair bit of googling.
While this doesn't help you, the 126.96.36.199 address resolves to Ouddorp, South Holland, Netherlands, and the other resolves to Lake Monticello, VA.
Rather than use the smtp url, you could try entering the ip address instead, avoiding dns. I doubt that google changes it.