Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sheilswinnubst.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 08:21:26 UTC · ↺ Refresh
MX Hostnames
- sheilswinnubst.com.1.0001.arsmtp.com
- sheilswinnubst.com.2.0001.arsmtp.com
MX Priorities
- sheilswinnubst.com.2.0001.arsmtp.com: 20
- sheilswinnubst.com.1.0001.arsmtp.com: 10
A / AAAA Records
- 45.40.151.118 ↩ 118.151.40.45.host.secureserver.net
Mail Server IPs
- 8.19.118.172 ↩ server233.appriver.com
- 8.31.233.64 ↩ server232.appriver.com
SOA Record
Raw SOA
ns55.worldnic.com namehost.worldnic.com 126020309 10800 3600 604800 3600
Primary NS (mname)
ns55.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126020309
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns56.worldnic.com
ns55.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- nv7indjmf3kl338hcs5hkl5kqi
- SPFv=spf1 include:spf.protection.outlook.com -all
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 sheilswinnubst.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits