Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
keystoneinsurance.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 22:56:38 UTC · ↺ Refresh
MX Hostnames
- mx1-us1.ppe-hosted.com
- mx2-us1.ppe-hosted.com
MX Priorities
- mx1-us1.ppe-hosted.com: 0
- mx2-us1.ppe-hosted.com: 10
A / AAAA Records
- 45.55.124.6 (no PTR)
Mail Server IPs
- 67.231.154.162 ↩ mx1-us1.ppe-hosted.com
- 148.163.129.50 ↩ mx1-us1.ppe-hosted.com
- 148.163.129.51 ↩ mx2-us1.ppe-hosted.com
- 67.231.154.163 ↩ mx2-us1.ppe-hosted.com
SOA Record
Raw SOA
decker.ns.cloudflare.com dns.cloudflare.com 2394923794 10000 2400 604800 1800
Primary NS (mname)
decker.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2394923794
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
decker.ns.cloudflare.com
macy.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a:dispatch-us.ppe-hosted.com ip4:67.59.57.98 include:spf.us.exclaimer.net include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- SPFv=spf1 a:dispatch-us.ppe-hosted.com ip4:67.59.57.98 include:spf.us.exclaimer.net include:spf.protection.outlook.com -all
- MS=ms69264761
- MS=ms90886249
- google-site-verification=JvhzgkTP_ZRXNtZUV0r-7v_3d_-uGAkK0i9CBC_4yb8
- knowbe4-site-verification=946f6a9bfbfe9f78ef2c77ca509faae8
- ppe-69ea6874e9ffbe0555f0ae2bae16f07bfa6fa5ff
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 keystoneinsurance.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits