bulletproof.co.uk

Valid Email Server
Domain Lookup › bulletproof.co.uk
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
bulletproof.co.uk
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-25 10:23:28 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

  • eu-smtp-inbound-2.mimecast.com
  • eu-smtp-inbound-1.mimecast.com

MX Priorities

No priority data.

A / AAAA Records

  • 104.26.14.30
  • 104.26.15.30
  • 172.67.70.254
  • 2606:4700:20::681a:f1e
  • 2606:4700:20::681a:e1e
  • 2606:4700:20::ac43:46fe

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

gordon.ns.cloudflare.com
irma.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a:smarthost.serverchoice.com include:mail.zendesk.com include:eu._netblocks.mimecast.com include:mailgun.org include:eu.mailgun.org include:spf.protection.outlook.com include:spf.exclaimer.net a:mailer.bulletproof.co.uk include:servers.outfunnel.com ~all
📊 DNS lookups: 9/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:mailto:[email protected]; ruf=mailto:[email protected]; fo=d; adkim=r; aspf=r; rf=afrf; ri=86400;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:mailto:[email protected]

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._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

10 records
  • anthropic-domain-verification-9yk1g1=1KQGjngFV4OIeYHK4pNwdlHGY
  • apple-domain-verification=8Fws7fteCCt0VpgZ
  • atlassian-domain-verification=Uv7cnIoRNu0hgQ/wbBrJq83X2QihbrPnG6O96LSM2CH9DRIhXs37lpLhdumfXoZI
  • google-site-verification=dXlgg6ABSHbE6zIH24WNi4sw3FoXNGENv3WC4G_1qRA
  • stripe-verification=616585004b4d78981a53635889bc665969660c21dec377a7ed0c9f3082c30863
  • SPFv=spf1 a:smarthost.serverchoice.com include:mail.zendesk.com include:eu._netblocks.mimecast.com include:mailgun.org include:eu.mailgun.org include:spf.protection.outlook.com include:spf.exclaimer.net a:mailer.bulletproof.co.uk include:servers.outfunnel.com ~all
  • 0ed1fe018a82f35d1f88184955a628e2a74cc2f42e
  • 7a869cd1940e203711b9d9e947540c8c
  • MS=ms10922160
  • MS=ms85624794
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 bulletproof.co.uk

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

No credit card required
Get 1,000 Free Credits