intoDNS.com – Check Your DNS | intoDNS is a slick web based DNS check. Check it out: http://www.intodns.com
Online SPF Tools
Online SPF Tools | What are some good online SPF tools? While the pros and cons of having an SPF record in DNS are debatable, there are many online tools that are helpful for you to create and test your SPF record should you want to try it out.
