knappe1a.de

Valid Email Server
Domain Lookup › knappe1a.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
knappe1a.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-04 17:43:45 UTC · ↺ Refresh

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MX Hostnames

  • knappe1a-de.mail.protection.outlook.com

MX Priorities

  • knappe1a-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 217.160.0.28 ↩ 217-160-0-28.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::2fd ↩ 2001-08d8-100f-f000-0000-0000-0000-02fd.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 52.101.181.153 ↩ mail-wa4pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:ca48::8 ↩ mail-miypr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::6 ↩ mail-zrxpr04cu00106.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 ns1098.ui-dns.de hostmaster.1und1.de 2017072052 28800 7200 604800 300
Primary NS (mname)
ns1098.ui-dns.de
Admin Email (rname)
hostmaster@1und1.de
Serial
2017072052
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1098.ui-dns.biz
ns1098.ui-dns.org
ns1098.ui-dns.de
ns1098.ui-dns.com

SPF Record

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

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

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

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

All TXT Records

4 records
  • google-site-verification=fWx3iMQX2hVosTtdSCeTEgnL2mo1WOKjwCw1HG9Oc2k
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms26001133
  • brevo-code:fcc0539bf5115aec774ff6c8278e4de3
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