Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sentinelcorp.com
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 01:42:43 UTC · ↺ Refresh
MX Hostnames
- mxb-00581602.gslb.pphosted.com
- mxa-00581602.gslb.pphosted.com
MX Priorities
- mxa-00581602.gslb.pphosted.com: 10
- mxb-00581602.gslb.pphosted.com: 10
A / AAAA Records
- 204.74.99.103 (no PTR)
Mail Server IPs
- 205.220.175.236 ↩ mx0b-00581602.pphosted.com
SOA Record
Raw SOA
edns4.ultradns.com olds.sentinelcorp.com 2019080957 86400 86400 86400 86400
Primary NS (mname)
edns4.ultradns.com
Admin Email (rname)
olds@sentinelcorp.com
Serial
2019080957
Refresh
86400s
Retry
86400s
Expire
86400s
Minimum TTL
86400s
Nameservers (NS)
edns4.ultradns.com
edns4.ultradns.net
edns4.ultradns.org
edns4.ultradns.biz
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 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
7 records- SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
- parkable-domain-verification=4G19HuDahNOgbVetSs7aapgLsYDh9Uo7VP2AvHTaI30=
- PzNkN21bHDsOZN7vTUvZIs8VLkpedv237yCYp8Knd2ndFqy4KYZqRFKf4gUFFDAze0d9AFI+Z+eL3hDtXtrvdA==
- MS=ms42937386
- 716cf5bnb9ahsa9lapaspb96r2
- apple-domain-verification=o1VR5CpwGGOA1mZW
- openai-domain-verification=dv-pkLfb7jIhFstSxe2KHun7vEQ
Full email verification for sentinelcorp.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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