This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Using the code below, I can't connect to any MX servers that I find with nsloookup -type=MX. I don't think the ports are blocked though, since I can use Thunderbird with my Gmail account. Any suggestions?