Free · local analysis
What would p=reject affect today?
Turn DMARC aggregate XML into an enforcement impact estimate. See which sending sources still fail alignment before you change DNS.
XMLGZIPZIPMultiple reports0 uploads
DMARC enforcement simulatorLOCAL
Drop aggregate reports here
.xml, .xml.gz, .gz, or .zip · up to 30 files
Or paste raw XML
Files are decompressed and parsed in this browser tab. MX Audit never receives the report, domain, IP addresses, or result.
01 Read reports02 Group sources03 Estimate impact04 Fix before reject
What this tool answers
Not “is my XML valid?”—but “what could break?”
Aggregate reports contain counts, source IPs, alignment results, and receiver dispositions. Combining them exposes the volume that still lacks an aligned SPF or DKIM pass.