Shawn Hogan ( @digitalpoint ) always share the large scale setup using by DP site. Has he mentioned/written up about DP's email infrastructure. The site must be sending atleast 50-100k emails every days. So what are all the setup implemented to reach user's inbox rather than spam box. Also, is it just an internal single server (twin2.digitalpoint.com - 199.187.241.232 - from Email header) handling all the email queues/jobs ?