csltd.org.uk

Valid Email Server
Domain Lookup › csltd.org.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
csltd.org.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 23:06:49 UTC · ↺ Refresh

MX Hostnames

  • csltd-org-uk.mail.protection.outlook.com

MX Priorities

  • csltd-org-uk.mail.protection.outlook.com: 10

A / AAAA Records

  • 4.250.208.38 (no PTR)

Mail Server IPs

  • 52.101.89.1 ↩ mail-lo0p265cu00201.inbound.protection.outlook.com
  • 52.101.99.2 ↩ mail-cwxp265cu00502.inbound.protection.outlook.com
  • 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
  • 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b::2 ↩ mail-lo0p265cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA bart.ns.cloudflare.com dns.cloudflare.com 2399208143 10000 2400 604800 1800
Primary NS (mname)
bart.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399208143
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

bart.ns.cloudflare.com
janet.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:51.11.168.76 ip4:20.49.241.152 ip4:51.11.26.157 ip4:51.11.29.224 ip4:51.11.30.110 ip4:51.132.41.68 ip4:51.132.47.61 include:spf.protection.outlook.com include:amazonses.com include:spf.hosted.jaama.co.uk -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

8 records
  • SPFv=spf1 ip4:51.11.168.76 ip4:20.49.241.152 ip4:51.11.26.157 ip4:51.11.29.224 ip4:51.11.30.110 ip4:51.132.41.68 ip4:51.132.47.61 include:spf.protection.outlook.com include:amazonses.com include:spf.hosted.jaama.co.uk -all
  • MS=ms96282337
  • _globalsign-domain-verification=L4_rXm-yp9--qbSHYf36kFiIJJP55TG9zU5vf40hsi
  • _globalsign-domain-verification=Oy7iehzGyehlcbPX7tmSo50zLoMAW9_Yfp-ROZAJt2
  • _globalsign-domain-verification=Y4-TWHGGsd-_0ivz7Zc0Qw8ipFxQWUqFgFo7hXg4Ei
  • access-domain-verification=43115989c0d331ad8c803401e8a0d7e246102e4628d54e7687d043cc13887b42
  • bj27tz5qvmmjv9pn4fph3ccny3gm643l
  • ms-domain-verification=f0be2a89-58cc-44c4-87fa-c804a14a2108
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