Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nsk-uk.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 00:17:07 UTC · ↺ Refresh
MX Hostnames
- d225972.b.ess.uk.barracudanetworks.com
- d225972.a.ess.uk.barracudanetworks.com
MX Priorities
- d225972.b.ess.uk.barracudanetworks.com: 10
- d225972.a.ess.uk.barracudanetworks.com: 5
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 18.133.136.186 ↩ mail.ess.uk.barracuda.com
- 18.133.136.187 ↩ mail.ess.uk.barracuda.com
- 18.133.136.188 ↩ mail.ess.uk.barracuda.com
SOA Record
Raw SOA
ns03.domaincontrol.com dns.jomax.net 2025050801 28800 7200 604800 600
Primary NS (mname)
ns03.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025050801
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns03.domaincontrol.com
ns04.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.uk.barracudanetworks.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
3 records- SPFv=spf1 include:spf.protection.outlook.com include:spf.ess.uk.barracudanetworks.com -all
- 57lpmpcllo6bubi5gjv3kr7ov6
- apple-domain-verification=BFFsgjdxSnacsigm
Full email verification for nsk-uk.com
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