SPF Macros for Sub-Domain Delegation: Unlocking Scalability and DMARC Alignment
Managing SPF records can quickly become a headache, especially for organizations with numerous sending services, internal applications, and delegated sub-domains. You're constantly battling the 10-DNS-lookup limit, trying to keep your records concise, and ensuring DMARC alignment for every legitimate sender. This is where SPF macros shine, offering a powerful, yet often underutilized, solution for flexible sub-domain delegation.
If you've ever found yourself cramming dozens of include: statements