Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cbrothers.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 07:34:58 UTC · ↺ Refresh
MX Hostnames
- cbrothers-com.relay1h.spamh.com
- cbrothers-com.relay1i.spamh.com
- cbrothers-com.relay1g.spamh.com
MX Priorities
- cbrothers-com.relay1h.spamh.com: 20
- cbrothers-com.relay1i.spamh.com: 30
- cbrothers-com.relay1g.spamh.com: 10
A / AAAA Records
- 23.187.248.17 ↩ iah-r01.nixins.com
Mail Server IPs
- 8.19.118.193 ↩ server267.appriver.com
- 8.31.233.104 ↩ server266.appriver.com
SOA Record
Raw SOA
albert.ns.cloudflare.com dns.cloudflare.com 2399144110 10000 2400 604800 1800
Primary NS (mname)
albert.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399144110
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
beth.ns.cloudflare.com
albert.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms87455352
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