flexi.de

Valid Email Server
Domain Lookup › flexi.de

Domain Overview

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

Checked via [email protected] · 2026-03-23 07:36:56 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • flexi-de.mail.protection.outlook.com: 1

A / AAAA Records

  • 217.160.0.148 ↩ 217-160-0-148.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::233 ↩ 2001-08d8-100f-f000-0000-0000-0000-0233.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com

SOA Record

Raw SOA ns1096.ui-dns.de hostmaster.1und1.de 2017072717 28800 7200 604800 300
Primary NS (mname)
ns1096.ui-dns.de
Admin Email (rname)
hostmaster@1und1.de
Serial
2017072717
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1096.ui-dns.com
ns1096.ui-dns.de
ns1096.ui-dns.org
ns1096.ui-dns.biz

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.perfora.net include:_spf.kundenserver.de include:nl2go.com include:newsletter2go.de ip4:185.78.61.194 include:mail.flexi.de -all
📊 DNS lookups: 6/10
✓ 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

3 records
  • MS=ms75711745
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.perfora.net include:_spf.kundenserver.de include:nl2go.com include:newsletter2go.de ip4:185.78.61.194 include:mail.flexi.de -all
  • MfmHLGUT7m/Q/2FMtMSFtnpgZj7IOgbzfFQmeXzKk/qAAny5gZY9qKa/O8qd72+NkL/0CnZR47x3krY3HA35qQ==
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