Dean Miller, a Messaging Security Specialist with over 20 years of experience in Messaging and Collaborations, has worked for top Fortune 500 companies such as Northwestern Mutual, Fannie Mae, and Agari. With a demonstrated history of expertise in IT service management and process improvement, Miller has worked across diverse industries such as insurance, pharmaceuticals, and banking. His professional specialties include MS Exchange, MS Outlook, Sharepoint, Office 365, Active Directory, SMTP messaging, Email Authentication, Cisco ESA/SMA, Proofpoint, and Windows Server. Miller's previous roles include responsibilities ranging from Senior Cyber Security Engineer to former Manager of IT. His ample experience in Messaging and Collaboration Operations, Messaging Analyst, and Business Analyst at top companies such as MetLife, American Cancer Society, TD Bank, and Towers Perrin prove his expertise in the field. Miller holds an ITIL Service Management Certification and is proficient in DMARC, SPF, DKIM, and other cutting-edge messaging technologies.