Case Study: Professional Sports Association achieves DMARC enforcement and protection from domain impersonation with Valimail's Instant SPF

How This Premier Membership Organization Eliminated Shadow IT Email Risk with Valimail

A premier global professional golf membership organization handling about 11 million emails per month—and facing 422k phishing attempts blocked monthly—needed to protect hundreds of domains from spoofing and impersonation while integrating with Microsoft Office 365. The Cloud Infrastructure team required an automated, easy-to-configure DMARC solution that avoided manual DNS work and the SPF 10-lookup limitation.

Valimail’s Enforce plus Instant SPF provided real-time SPF records per sending service, enabling DMARC, DKIM and SPF enforcement across all domains. The deployment saved time, reduced DNS errors, identified thousands of unauthorized senders, and achieved a 96% average DMARC pass rate, delivering continuous protection against domain impersonation and spoofing.