rbk.ie

Valid Email Server
Domain Lookup › rbk.ie

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rbk.ie
Yes
✓ Yes
Symantec
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 07:42:05 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • cluster8a.eu.messagelabs.com
  • cluster8.eu.messagelabs.com

MX Priorities

  • cluster8.eu.messagelabs.com: 10
  • cluster8a.eu.messagelabs.com: 20

A / AAAA Records

  • 216.150.1.1 (no PTR)

Mail Server IPs

  • 195.245.230.191 ↩ mail856.messagelabs.com
  • 195.245.231.66 ↩ mail871.messagelabs.com
  • 195.245.231.71 ↩ mail875.messagelabs.com
  • 85.158.142.211 ↩ mail835.messagelabs.com
  • 85.158.142.216 ↩ mail840.messagelabs.com
  • 195.245.230.195 ↩ mail853.messagelabs.com
  • 34.91.159.228 ↩ 228.159.91.34.bc.googleusercontent.com

SOA Record

Raw SOA ns1.blacknight.com hostmaster.blacknight.com 1276192765 14400 7200 2419200 3600
Primary NS (mname)
ns1.blacknight.com
Admin Email (rname)
hostmaster@blacknight.com
Serial
1276192765
Refresh
14400s
Retry
7200s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

ns1.blacknight.com
ns3.blacknight.com
ns2.blacknight.com
ns4.blacknight.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.messagelabs.com include:spf-00196902.pphosted.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1:s; pct=20; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 20% of failing messages only

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

9 records
  • pu6sla0p9vmiusteu4qseo50eh
  • e4l7m7p3vrclsiircvl8gtbfhq
  • google-site-verification=OlWfDp04r7094JjKRJsdODSUXACW3gAAOys7WZbbH0c
  • SPFv=spf1 include:spf.messagelabs.com include:spf-00196902.pphosted.com -all
  • cisco-ci-domain-verification=181f30489b5178440e137bc59e07bb743d75cb050fcde9211aa9bcf85cdc6237
  • ZOOM_verify_IwpwqqpeQaiuV4M_A-e_OQ
  • MS=5BBEA1DB62467179626AD7323E6317FDA9D31720
  • apple-domain-verification=Scz7QvbmoWlk4zn0
  • ngj164fjf2lu0n7suqh6s04f5o
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for rbk.ie

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits