Check domain reputation signals before mailbox providers react.
Paste sending domains and Lens reads the public signals reputation systems already see: authentication, MX completeness, and blacklist exposure. The output is a KILL / REHAB / KEEP plan.
What public reputation means
Authentication posture
SPF and DMARC tell receivers whether the domain is intentionally configured for sending.
Blacklist exposure
DNSBL hits are visible reputation debt that can follow a campaign.
Operational completeness
MX, website, and infrastructure signals help distinguish real assets from throwaway senders.
How to use the verdict
KILL
Retire domains with severe public risk instead of polishing DNS around a burned sender.
REHAB
Fix missing SPF, weak DMARC, MX gaps, or limited listings before scaling.
KEEP
Save the clean baseline and monitor for weekly drift.
Domain reputation checker FAQ
Is this Google Postmaster Tools?
No. Postmaster Tools is private authenticated provider data. Lens checks external public evidence.
Can a clean scan guarantee inbox placement?
No. It means the public structural risk is clean enough to keep monitoring.
Can I scan domains and IPs together?
Yes. Use the main scanner for mixed estate checks.