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How We Use SPEWS at


Bill has a great post on how we use SPEWS and how we reject email using blacklists (RBLs) at SPEWS is a pretty controversial blacklist that if not properly used, can produce really bad results for anti-spam filters. If you’re interested, feel free to read more.

About the Author

This is a post written and contributed by Pat Matthews.

Pat Matthews is the Senior Vice President of Corporate Development at Rackspace. Prior to Rackspace, Pat founded, a business email hosting company that made Inc. magazine's list of the fastest-growing private companies in America. In 2007 Rackspace acquired and the two businesses joined forces. From 2007 to 2009, Pat led the Rackspace mail business and helped grow it to more than two million paid mailboxes worldwide.

In January 2010, Pat was promoted to Vice President and General Manager of all Rackspace cloud businesses. In this role he led Rackspace to become one of the most important companies in the cloud computing industry. He was promoted to Senior Vice President of Cloud at Rackspace in August of 2010.

Today, Pat oversees corporate development, which includes M&A, investment projects, new business initiatives and strategic partnerships.

Pat is a graduate of Virginia Tech. He is an angel investor and advisor in several startup companies. Pat and his family live in San Antonio, TX.

  • Ben Hubbard

    For situations where a, Inc. user does not want to see spam at all, even mail we identify as spam, there is an option in the “Spam Filtering Preferences

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