duncb.co.uk

Valid Email Server
Domain Lookup › duncb.co.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
duncb.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-14 05:41:32 UTC · ↺ Refresh

MX Hostnames

  • mail.rollernet.us
  • mail2.rollernet.us
  • skarsnik.duncb.co.uk

MX Priorities

  • skarsnik.duncb.co.uk: 0
  • mail.rollernet.us: 1
  • mail2.rollernet.us: 1

A / AAAA Records

  • 86.130.45.230 ↩ host86-130-45-230.range86-130.btcentralplus.com

Mail Server IPs

  • 86.130.45.230 ↩ host86-130-45-230.range86-130.btcentralplus.com
  • 208.79.240.2 ↩ mail.rollernet.us
  • 2607:fe70::3:0:0:0:a ↩ mail.rollernet.us
  • 208.79.241.2 ↩ mail2.rollernet.us
  • 2607:fe70::4:0:0:0:a ↩ mail2.rollernet.us

SOA Record

Raw SOA ns2-auth.rollernet.us hostmaster.rollernet.us 2026030900 10800 3600 1814400 172800
Primary NS (mname)
ns2-auth.rollernet.us
Admin Email (rname)
hostmaster@rollernet.us
Serial
2026030900
Refresh
10800s
Retry
3600s
Expire
1814400s
Minimum TTL
172800s

Nameservers (NS)

ns1-auth.rollernet.us
ns2-auth.rollernet.us

SPF Record

✓ Strict (-all)
v=spf1 include:auth.spf.rollernet.us -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 include:auth.spf.rollernet.us -all
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