Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
steineratlantic.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 21:20:29 UTC · ↺ Refresh
MX Hostnames
- steineratlantic-com.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 72.167.140.241
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns31.domaincontrol.com
ns32.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 +a include:spf.protection.outlook.com include:spf.sendinblue.com include:_spf.psm.knowbe4.com include:22767504.spf05.hubspotemail.net include:_spf.salesforce.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=wXCMWHZC4epMvv_RJ0Y6Qr9yvODo_1bV0NUSP8xKBT4
- Sendinblue-code:101b5bd20f5927f7898fac6392fefa57
- SPFv=spf1 +a include:spf.protection.outlook.com include:spf.sendinblue.com include:_spf.psm.knowbe4.com include:22767504.spf05.hubspotemail.net include:_spf.salesforce.com -all
- google-site-verification=IaXmJoouEz1yORalWmm9Bz_qfGhPXl1AtnLoEvOtAl4
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for steineratlantic.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits