Enter the sender domain.
DNS check
Review DMARC policy and alignment risk.
DMARC checks are planned as part of Sendlander's setup analysis and domain health surface.
Planned: standalone DMARC checker is not live yet.
Workflow
Simple enough to run before every important send.
Resolve and parse the DMARC record.
Show policy, alignment, and report address findings.
Guide
Use the result as evidence.
When to use this
DMARC checker is useful for senders moving from basic authentication toward aligned domain policy. The job is to explain DMARC policy, alignment, and the placement risk of failed authentication, using evidence that is specific to the sender and message path under test.
The main risk is tightening policy before the real sending streams pass alignment consistently. Sendlander keeps the workflow grounded by tying the page back to real reports, real seed results, and visible diagnostic checks instead of generic deliverability advice.
What the report should prove
The useful evidence includes DMARC record presence, policy, observed DMARC result, From domain, DKIM alignment, and SPF alignment. These signals help separate a broad sender problem from a provider-specific issue or a temporary pending state.
The checks to review are policy mode, organizational-domain alignment, report addresses where present, and delivered-message authentication results. The result should lead to one or two concrete fixes, not a vague list of every possible deliverability concern.
How to act on it
A practical workflow is to read the current policy, confirm delivered alignment, stage any policy changes carefully, and retest placement. After each meaningful change, rerun a comparable test so the team can tell whether placement improved.
Use this page as an entry point into the product, then save the report in the dashboard when the result matters. Saved reports make follow-up tests easier to compare and keep the next fix tied to evidence.
Details
Focused answers.
Should every domain use reject?
Not immediately. DMARC policy changes should be staged carefully after monitoring authentication results.
Will Sendlander process aggregate DMARC reports?
Not in v1. The focus is quick diagnostics and placement checks.