Best Practices

Best Practices

Keeping SPF Synchronized

Keeping SPF synchronized means updating DNS whenever senders, vendors, or infrastructure change so authentication stays accurate.

Intermediate 7 min read

Best Practices

Managed SPF Include

A managed SPF include centralizes provider authorization in one maintained hostname so your domain stays within lookup limits.

Intermediate 6 min read

Best Practices

SPF Flattening Explained

SPF flattening replaces nested includes with explicit IP mechanisms to reduce DNS lookups and avoid the ten-lookup limit.

Advanced 8 min read

Best Practices

SPF Record Validation

SPF record validation checks syntax, duplicate policies, lookup limits, and real-world resolution before you rely on a record in production.

Beginner 6 min read