Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
klassencorp.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 19:36:47 UTC · ↺ Refresh
MX Hostnames
- klassencorp-com.inbound.emailservice.co
- klassencorp-com.inbound.emailservice.cc
- klassencorp-com.inbound.emailservice.io
MX Priorities
- klassencorp-com.inbound.emailservice.io: 10
- klassencorp-com.inbound.emailservice.cc: 20
- klassencorp-com.inbound.emailservice.co: 30
A / AAAA Records
- 64.91.228.225 ↩ host3.uglyduckmarketing.com
Mail Server IPs
- 107.21.241.201 ↩ ec2-107-21-241-201.compute-1.amazonaws.com
- 52.44.33.109 ↩ ec2-52-44-33-109.compute-1.amazonaws.com
- 54.211.15.143 ↩ ec2-54-211-15-143.compute-1.amazonaws.com
SOA Record
Raw SOA
dee.ns.cloudflare.com dns.cloudflare.com 2399721197 10000 2400 604800 1800
Primary NS (mname)
dee.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399721197
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dee.ns.cloudflare.com
lloyd.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:207.141.245.34 ip4:67.53.104.82 +include:spf.us.emailservice.io +include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=ms12435860
- SPFv=spf1 ip4:207.141.245.34 ip4:67.53.104.82 +include:spf.us.emailservice.io +include:spf.protection.outlook.com -all
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