Part 2 is a lot more useful (http://zohrob.com/posts/entrepreneurs-guide-to-email-delivery-part-2.html http://zohrob.com/posts/entrepreneurs-guide-to-email-deli

Part 2 is a lot more useful (http://zohrob.com/posts/entrepreneurs-guide-to-email-delivery-part-2.html http://zohrob.com/posts/entrepreneurs-guide-to-email-deliver...). Part 1 basically says, if you want to run a mail server, use a dedicated IP for it. Part 2 actually goes into the anti-SPAM technologies that will make your messages appear as non-SPAM. One thing that I would add to the section on SPF: don't say that any mail not coming from your domain is SPAM. It's a bad plan. Use it as a way to gain non-SPAM points if it does validate, but don't say that mail not coming from your servers is SPAM definitionally. Why? Because more and more people are forwarding mail and most mail forwarders do NOT rewrite the chain in a way that preserves SPF. Basically, if you deny all other domains, many people who forward their mail will see your emails as SPAM.