duckworth.co.uk

Valid Email Server
Domain Lookup › duckworth.co.uk

Domain Overview

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

Checked via [email protected] · 2026-03-20 08:42:32 UTC · ↺ Refresh

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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

  • 188.65.32.69 (no PTR)

Mail Server IPs

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

SOA Record

Raw SOA ns10.dnsmadeeasy.com dns.dnsmadeeasy.com 2009010335 43200 3600 1209600 180
Primary NS (mname)
ns10.dnsmadeeasy.com
Admin Email (rname)
dns@dnsmadeeasy.com
Serial
2009010335
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s

Nameservers (NS)

ns11.dnsmadeeasy.com
ns13.dnsmadeeasy.com
ns12.dnsmadeeasy.com
ns15.dnsmadeeasy.com
ns10.dnsmadeeasy.com
ns14.dnsmadeeasy.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.messagelabs.com include:spf.protection.outlook.com include:spf.exclaimer.net include:spf.sendinblue.com include:spf.sslx.co.uk a:mail.cogplatform.co.uk ip4:85.92.66.66/32 ip4:85.92.66.67/32 ip4:85.92.66.68/32 ip4:85.92.66.69/32 ip4:85.92.66.70/32 ip4:132.145.8.43/32 ip4:152.67.131.167/32 ip4:146.177.32.162/32 ip4:195.99.149.122 ip4:82.71.23.110/32 ip4:217.33.46.122/32 ip4:148.105.14.116/32 -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=25; rua=mailto:[email protected],mailto:[email protected]; sp=quarantine; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: quarantine
⚠ Policy applies to 25% of failing messages only

DKIM Selectors

✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

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

All TXT Records

7 records
  • SPFv=spf1 include:spf.messagelabs.com include:spf.protection.outlook.com include:spf.exclaimer.net include:spf.sendinblue.com include:spf.sslx.co.uk a:mail.cogplatform.co.uk ip4:85.92.66.66/32 ip4:85.92.66.67/32 ip4:85.92.66.68/32 ip4:85.92.66.69/32 ip4:85.92.66.70/32 ip4:132.145.8.43/32 ip4:152.67.131.167/32 ip4:146.177.32.162/32 ip4:195.99.149.122 ip4:82.71.23.110/32 ip4:217.33.46.122/32 ip4:148.105.14.116/32 -all
  • google-site-verification=YLUMHt7--HwMYSNudtilYu3AJnHFp3n-5WkKZrkvam4
  • 6ov3j9q30kkkntppm2eitpkhah
  • MS=ms76559573
  • sendinblue-code:4b26c93b9973485b627f3cc030fec2c0
  • google-site-verification=tUyniSQEpRNr_LiO-PtoEQFva8EmAmh5j6ap_OZ3RWc
  • IYUzMNREcixE23cvp2c8LfXy1F/Hsd6AAt6Qb2FnBH3Mxa0cVZahKlr+7Y35sce9wACjXUD0usQqd0m5BqEzGw==
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