Every Layer of Your Mail Server, Tested
One scan covers DNS records, authentication protocols, reverse lookups, and encryption. Each check returns structured pass/fail results with actionable diagnostics.
MX Record Validation
Resolve and verify MX records, check priority ordering, confirm each mail server responds on port 25.
SPF Record Check
Parse SPF records, detect common errors like too many DNS lookups, verify include chains.
DKIM Verification
Test DKIM selector records, verify key length and algorithm, check for rotation issues.
DMARC Configuration
Validate DMARC record syntax, check policy settings, verify RUA/RUF reporting addresses.
PTR/Reverse DNS
Verify reverse DNS entries match forward DNS, a requirement for most ISPs to accept your mail.
TLS Support
Test STARTTLS support, check TLS 1.2 and 1.3 versions, verify certificate chain and expiration.
Automate Server Testing via API
Three endpoints. Create a test, poll for results, list previous scans. Integrate server checks into your CI/CD pipeline or monitoring stack.
curl -X POST https://api.mailodds.com/v1/server-tests \ -H "X-Api-Key: mo_live_..." \ -H "Content-Type: application/json" \ -d '{ "domain": "example.com" }'
{
"id": "st_8f3a1b2c",
"domain": "example.com",
"status": "completed",
"checks": {
"mx": { "pass": true, "records": ["mx1.example.com", "mx2.example.com"] },
"spf": { "pass": true, "record": "v=spf1 include:_spf.example.com ~all" },
"dkim": { "pass": true, "algorithm": "rsa-sha256", "key_length": 2048 },
"dmarc": { "pass": true, "policy": "reject", "rua": "mailto:dmarc@example.com" },
"ptr": { "pass": true, "hostname": "mx1.example.com" },
"tls": { "pass": true, "versions": ["TLSv1.2", "TLSv1.3"], "certificate_valid": true }
},
"score": 100,
"created_at": "2026-03-15T10:30:00Z"
}Related Tools
Server testing is one part of the deliverability picture. Combine it with DMARC monitoring and authentication guides for complete coverage.
DMARC Monitoring
Track DMARC aggregate reports, identify unauthorized senders, and move toward p=reject with confidence.
Email Authentication Guide
Step-by-step guide to configuring SPF, DKIM, and DMARC records for your sending domains.
Deliverability Platform
The full validate, send, measure loop. Server testing feeds into the broader deliverability picture.
Frequently Asked Questions
Stop losing revenue to typos, bots, and blind spots.
From typo correction to storefront attribution. One platform, one API, nothing stitched together.