Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
dur.ac.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 11:44:21 UTC · ↺ Refresh
MX Hostnames
- dur-ac-uk.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 99.83.253.255
- 75.2.69.134
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
infoblox2.dur.ac.uk
ns1.ja.net
infoblox1.dur.ac.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.durham.ac.uk include:spf.protection.outlook.com include:amazonses.com include:customers.clickdimensions.com include:spf.topdesk.net include:mh.blackboard.com ip4:147.154.235.36 ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
6 records- SPFv=spf1 include:spf.durham.ac.uk include:spf.protection.outlook.com include:amazonses.com include:customers.clickdimensions.com include:spf.topdesk.net include:mh.blackboard.com ip4:147.154.235.36 ~all
- QuoVadis=f69adfac-bf7d-45b0-9a52-f6356c47b88d
- MS=ms14704709
- ZOOM_verify_P8ugvCVkQRCGlVj7kz7sLQ
- MS=628D40B0D94AC3371A7564231303173B0011E13A
- have-i-been-pwned-verification=dweb_3vse3owq8lx8nlag53ijwzuw
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
See demo & docs
Deep verification
Full email verification for dur.ac.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits