Highly motivated, solution focused IT professional, with 20+ experience in large scale Enterprise environments. Worked with and on Lotus Domino (on-premise), Exchange (on-premise & O365). Running Messaging Services for more than 150.000 Users (> 200.000 Mailboxes world wide).Well specialized in Email- and Gateway-Security (Anti-Spam, Anti-Spoofing, Anti-Phishing etc). Particular area of interest is Email-Authentication using Internet Standards (SPF, DKIM and DMARC), leveraging Proofpoint's great product suite (PoD, EFD and TAP), to protect Domains and Brands. SPOC for all Email-Authentication related questions and projects (e.g. Mergers and Acquisitions). Responsible for managing 17.000 productive Domains. More than 85 percent of them in reject Mode already. Part of day-to-day work is vendor management according to ITIL standards. Experienced in in- and outsourcing projects to Offshore locations. Working and leading multicultural teams across the Globe, responsible for the entire SMTP transport stack, from the Internet to O365. Actively seeking for new challenges and opportunities in the area of Email / Email-Security / Email-Authentication / Proofpoint.