I don't know what was "talked about earlier in this forum", but I can't imagine why an internet provider would block mail from Empeg.com?

More likely, you didn't get a reply when you e-mailed Empeg because they're taking a holiday between Christmas and New Year's or something. Rob has always been really good about replying quickly to e-mails, so if he hasn't replied, it's probably because he's just not there right now. You'll get a reply soon.