4-fi.de

Valid Email Server
Domain Lookup › 4-fi.de

Domain Overview

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

Checked via [email protected] · 2026-03-18 19:00:15 UTC · ↺ Refresh

MX Hostnames

  • 4fi-de0c.mail.protection.outlook.com

MX Priorities

  • 4fi-de0c.mail.protection.outlook.com: 10

A / AAAA Records

  • 217.160.0.44 ↩ 217-160-0-44.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::205 ↩ 2001-08d8-100f-f000-0000-0000-0000-0205.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com

SOA Record

Raw SOA ns1019.ui-dns.biz hostmaster.1and1.com 2017052214 28800 7200 604800 300
Primary NS (mname)
ns1019.ui-dns.biz
Admin Email (rname)
hostmaster@1and1.com
Serial
2017052214
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1057.ui-dns.org
ns1044.ui-dns.com
ns1019.ui-dns.biz
ns1104.ui-dns.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

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

2 records
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms28247830
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