Was your friend ever able to set up the account? I wasn't really sure where that left off other than it seemed it was on their end. If not, let me know via PM and we will work it out.
As far as this posters issue, this site did not specifically ban them. We use a third party spam blocker filters registrations. Prior to that domain being blocked by the software, we were getting 3 or more pieces of spam a day from that domain. I did not know until now that it was a legit email server in Sweeden until yesterday because most spam makes up their servers.
Do I turn off our spam filter? Not really an option. Do I allow that domain and have the spam increase again? Not really a good option either.
In this case, if this person can't use Facebook, I could set up an account for them.