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Launch: Blacklisting and Safelisting IP Addresses

We released another phase of our summer spam upgrades today. Users and administrators now have the ability to Safelist and Blacklist IP addresses. Like the email address Safelisting and Blacklisting, this takes affect within Postfix, which means whitelisted email messages will bypass spam filtering and Blacklisted emails will not be accepted by our servers. This ensures that the email you want gets to you quickly and accurately and the email you don’t want doesn’t clutter your inbox or spam folder. You can also Safelist or Blacklist entire IP address ranges, making this very powerful for large organizations.
This feature is available in the control panel today for all customers, and will be available in webmail once you upgrade to Harbinger (you will be able to upgrade starting sometime next week).

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 Webmail.us, a business email hosting company that made Inc. magazine's list of the fastest-growing private companies in America. In 2007 Rackspace acquired Webmail.us 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.


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