Initial 48-hour audit
Forensic infrastructure review covering all available signals. Spamhaus listing details with case IDs and specific reasons; Microsoft SNDS data including historical movement; Gmail Postmaster Tools data going back 90 days; your bounce logs from past 30 days; DKIM/SPF/DMARC alignment results on recent sends; content fingerprint analysis across recent campaigns; list acquisition history if available.
Output: written audit report identifying most likely root cause(s) with confidence levels (high/medium/low), specific evidence supporting each cause identification, recommended remediation steps. Report is honest about uncertainty when present; we don't fabricate certainty we don't have.