Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
master.cr
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 21:46:23 UTC · ↺ Refresh
MX Hostnames
- mail.master.cr
MX Priorities
- mail.master.cr: 10
A / AAAA Records
- 190.0.230.216 ↩ sl6.cyberfuel.com
Mail Server IPs
- 190.0.227.5 ↩ sl6.cyberfuel.com
SOA Record
Raw SOA
ns2.cyberfuel.com alberto.master.cr 2026030302 10800 3600 604800 10800
Primary NS (mname)
ns2.cyberfuel.com
Admin Email (rname)
alberto@master.cr
Serial
2026030302
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns2.cyberfuel.com
ns1.cyberfuel.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a include:spf.cyberfuel.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- GOOGLE-SITE-VERIFICATION=BDGUX0MD8UKDM2_ZHZ3PQHWXECEFKLC9B5K1I
- SPFv=spf1 mx a include:spf.cyberfuel.com ~all
Full email verification for master.cr
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