Sorry but this old discussion
Will be painful to use.
I'll give it one reply and that's it. As there is more to this than the Samsung servers the Internet provider's DNS can be in play as well.
That's why I use a Google DNS of 18.104.22.168 and the other one before I do much else.
Sorry, but as this is an old post and 50+ posts in it, we can't carry on a decent discussion.