i40.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
i40.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-04 22:43:45 UTC · ↺ Refresh

MX Hostnames

  • i40-de.mail.protection.outlook.com

MX Priorities

  • i40-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 76.76.21.21 (no PTR)

Mail Server IPs

  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com

SOA Record

Raw SOA sue.ns.cloudflare.com dns.cloudflare.com 2399563845 10000 2400 604800 1800
Primary NS (mname)
sue.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399563845
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

zod.ns.cloudflare.com
sue.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.mailersend.net include:_spf.firebasemail.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1

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

All TXT Records

7 records
  • google-site-verification=TZEZseQK-pJJQcng69wBq06m67zBrAwB4D4BDZB44T8
  • google-site-verification=b4eZWOXApdPvc4huz-i7k4aETu5iVf3qsGiEcqdP5VM
  • linkedin-site-verification=60161864-7d56-452a-8b30-739b72efcd34
  • SPFv=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.mailersend.net include:_spf.firebasemail.com -all
  • MS=ms47896132
  • atlassian-domain-verification=qPJHEZDw1DCKzXgY5jYWEMaRmURmmQalY4A3mdNeaDXxPNIsxUBUFxh5zKgNUMX9
  • firebase=pathfinder-whitelabel
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