Host dynamic SPF records at the edge, delegate DMARC governance with CNAME records, and run real-time mail diagnostics across your domain portfolio.
Delegate complex email authentication records to Sledgeheader's edge workers. Zero manual DNS updates required when sending vendors change.
Bypass the 10-lookup SPF limit permanently. We recursively flatten macros and vendor inclusions at the edge, serving static IPs instantly.
Delegate `_dmarc` via CNAME. Adjust alignment thresholds (`p=none` to `p=reject`) and parse RUA reports without editing registrar records.
Map third-party vendor selectors (SendGrid, Salesforce, Google) to central dynamic endpoints for instant alignment verification.
Run real-time audits against Cloudflare Workers and Google Cloud Run.
Checks for CNAME targets returning NXDOMAIN and tests for unclaimed cloud service signatures.
Verifies bidirectional lookup alignment between egress IP addresses and PTR record hostnames.
Parses raw email headers, traces SMTP relay hops, and verifies SPF/DKIM/DMARC auth results.
Recursively maps DNS lookup counts across vendor include mechanisms.
Converts raw gzipped or uncompressed DMARC aggregate XML telemetry into human-readable tables.
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Zero-lockin pricing designed for domain administrators, MSPs, and enterprise security engineering teams.
Single domain fix for immediate Google/Yahoo deliverability emergencies.
Continuous dynamic updates for growing domains and marketing stacks.
High-volume REST API access and dual-approval mutations for MSPs.
Diagnostic tools are one-off lookup engines. Hosted SPF is active infrastructure operating on edge networks that dynamically flattens vendor DNS includes in real time so your domain stays under the 10-lookup limit.
You point your domain's `_dmarc.yourdomain.com` host record to `dmarc.sledgeheader.com` via CNAME. This allows you to adjust policies (`none`, `quarantine`, `reject`) and manage feedback loops without editing domain DNS records.