As a followup to this previous post about MailChimp server expansion, last night we added another app server to one of our data centers (for better load balancing), and moved some background processes to another server. We’ve also got some new database servers in place, a new email delivery server, plus a new range of IPs that we’ll be bringing online soon. We’re investing a lot into our infrastructure, and have been itching to get it all live asap. But these things take time. More updates to come!