Managed SPF & SPF Optimization
SpoofSentry discovers your full SPF include chain, scores it for risk, and provides an optimization engine that flattens, deduplicates, and collapses CIDRs without breaking mail flow. Every change goes through preview, approval, and post-apply verification with automatic rollback for supported providers.
SPF discovery and parsing
SpoofSentry recursively resolves your SPF record, following every Live include, redirect, and exists mechanism to build a complete picture of your authorized sending infrastructure. The parser counts DNS lookups against the RFC 7208 10-lookup limit and flags records that are at or over the threshold.
Each mechanism is annotated with the service it belongs to (Google Workspace, Microsoft 365, SendGrid, Mailchimp, Amazon SES, and hundreds more). Orphaned includes that no longer resolve are flagged for cleanup. The full include tree is visualized in the dashboard with lookup counts at each level.
SPF risk scoring: six-factor model
SpoofSentry evaluates SPF health across six dimensions: Live lookup exhaustion (proximity to the 10-lookup limit), stale dependencies (includes pointing to decommissioned services), fragility (single-point-of-failure chains), shadow senders (authorized IPs with no DMARC report traffic), permissiveness (overly broad CIDR ranges or +all qualifiers), and maintenance burden (frequency of required updates).
The composite score is presented alongside per-factor breakdowns so you can prioritize remediation. Historical scoring tracks how SPF health changes over time as services are added, removed, or migrated.
SPF optimization engine
The optimization engineLive reduces DNS lookups by flattening include chains into direct IP addresses and CIDR ranges, deduplicating overlapping entries, and collapsing adjacent CIDRs into larger blocks. The engine respects the 255-character TXT record limit and automatically splits into multiple SPF-safe records when needed.
Every optimization pass runs safety checks: the optimized record is compared against the original to confirm semantic equivalence (same set of authorized IPs), the lookup count is validated to be within limits, and a dry-run DNS resolution confirms the result parses correctly. No optimization is applied without passing all checks.
Deployment modes
SpoofSentry supports five deployment modes to match your operational maturity. AdvisoryLive mode generates recommendations without touching DNS. GuidedLive mode provides step-by-step instructions for manual application. PreviewLive mode shows the exact DNS change that will be made. Apply with approvalLive requires a human to approve the change before SpoofSentry writes to DNS. Auto-applyBetaEnterprise (Enterprise only) applies optimizations automatically when safety checks pass.
All modes that write to DNS go through the same preview, safety check, and post-apply verification pipeline. The difference is whether a human approval step is required before the write happens.
Rollback and drift detection
Every SPF change made through SpoofSentry is versioned.Live The previous record state is preserved and available for automatic rollback from the dashboard or API. Rollback re-applies the previous record and runs post-apply verification to confirm the revert took effect.
Drift detection monitors your SPF records for out-of-band changes made outside SpoofSentry (for example, by another team member editing DNS directly). When drift is detected, SpoofSentry alerts via your configured notification channels and flags the record for review. This prevents silent breakage from uncoordinated DNS edits.
Supported DNS providers
Managed SPF works with SpoofSentry's DNS provider integrations: CloudflareLive, AWS Route 53Live, Azure DNSLive, Google Cloud DNSLive, and GoDaddyLive. Each integration supports the full lifecycle: preview, apply, verify propagation, and rollback.
For DNS providers not directly integrated, SpoofSentry generates the exact record values with copy-to-clipboard support and provides verification once the change is applied manually.
Safety controls
Every SPF change is protected by multiple safety layers.Live Preview before apply shows the exact before/after DNS state. Semantic equivalence checks confirm the optimized record authorizes the same IP ranges as the original. Lookup count validation ensures the result stays within the 10-lookup limit. Approval workflows (maker-checker, MSSP dual approval, or emergency override) gate changes in production.
Post-apply, SpoofSentry re-resolves the published record with retries to confirm the change propagated correctly. If verification fails, the operator is alerted immediately and rollback is offered.
Frequently asked questions
How does SpoofSentry fix the SPF 10-lookup limit?
The optimization engine flattens include chains into direct IPs and CIDRs, deduplicates overlapping entries, and collapses adjacent CIDRs, while respecting the 255-character TXT limit and splitting into SPF-safe records when needed. It counts lookups against the RFC 7208 limit and flags records at or over the threshold.
Will optimizing my SPF record break legitimate mail?
Every optimization pass checks semantic equivalence (the optimized record authorizes the same set of IPs as the original), validates the lookup count, and dry-run resolves the result before anything is applied. No change is written unless all safety checks pass.
Do I have to let SpoofSentry change my DNS automatically?
No. There are five deployment modes: advisory, guided, preview, apply-with-approval, and auto-apply (Enterprise only). Any mode that writes to DNS runs through the same preview, safety-check, and post-apply verification pipeline; the difference is whether a human approval step is required.
What is SPF drift detection?
SpoofSentry monitors your SPF records for out-of-band changes made outside the platform (for example, another team editing DNS directly) and alerts you so uncoordinated edits do not silently break authentication. Every SpoofSentry change is versioned for one-click rollback.
Stop fighting the 10-lookup limit
Run a free SPF check to see your current lookup count, stale includes, and optimization opportunities.