reactiveac.co.uk

Valid Email Server
Domain Lookup › reactiveac.co.uk

Domain Overview

DNS: ✓ 4h ago Checker: ✓ 4h ago
reactiveac.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-10-30 03:31:21 UTC · ↺ Refresh

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MX Hostnames

  • reactiveac-co-uk.mail.protection.outlook.com

MX Priorities

  • reactiveac-co-uk.mail.protection.outlook.com: 0

A / AAAA Records

  • 79.170.44.82 ↩ web82.extendcp.co.uk

Mail Server IPs

  • 52.101.89.28 ↩ mail-lo2p265cu02504.inbound.protection.outlook.com
  • 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
  • 52.101.89.18 ↩ mail-lo3p265cu00502.inbound.protection.outlook.com
  • 52.101.89.1 ↩ mail-lo0p265cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b:: ↩ mail-lo2p265cu02300.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 ns1.krystal.uk admin.k-validator-hera.krystal.co.uk 2026091503 3600 1800 1209600 86400
Primary NS (mname)
ns1.krystal.uk
Admin Email (rname)
admin@k-validator-hera.krystal.co.uk
Serial
2026091503
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns2.krystal.uk
ns1.krystal.uk

SPF Record

✓ Strict (-all)
v=spf1 include:relay.k.io ip4:77.72.1.34 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;sp=reject;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400;rua=mailto:[email protected];ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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

3 records
  • MS=ms45552179
  • 557uguaq1hbajo8ao3c7cqsqtl
  • SPFv=spf1 include:relay.k.io ip4:77.72.1.34 include:spf.protection.outlook.com -all
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