collins-chartered-accountants.co.uk

Valid Email Server
Domain Lookup › collins-chartered-accountants.co.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
collins-chartered-accountants.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 10:22:45 UTC · ↺ Refresh

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MX Hostnames

  • collinscharteredaccountants-co-uk01i2c.mail.protection.outlook.com

MX Priorities

  • collinscharteredaccountants-co-uk01i2c.mail.protection.outlook.com: 10

A / AAAA Records

  • 185.194.90.29 ↩ s92.lon.krystal.io

Mail Server IPs

  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.krystal.io admin.demo.s92.lon.krystal.io 2026021003 3600 1800 1209600 86400
Primary NS (mname)
ns1.krystal.io
Admin Email (rname)
admin@demo.s92.lon.krystal.io
Serial
2026021003
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns3.krystal.io
ns4.krystal.io
ns1.krystal.io
ns2.krystal.io

SPF Record

✓ Strict (-all)
v=spf1 include:relay.k.io ip4:185.194.90.29 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=none; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 216 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

2 records
  • k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCG2i7zwwmW/Iu5JXgLKiXLJThqX/wIqPo/XoqalVW3d0YsThGvcHa09uBXO9OCoRDhzfvyRxVfuWba5svvwYnQ2GgExtYen3EprOGHcQmIl5z975rKUPlz8Wl1Z+NxnuXOF73EXCjxv0i/XiBgh/0T+8fakWsJWJ3gw6c61x91yQIDAQAB
  • SPFv=spf1 include:relay.k.io ip4:185.194.90.29 include:spf.protection.outlook.com -all
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