kern-liebers.com

Valid Email Server
Domain Lookup › kern-liebers.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
kern-liebers.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-06 15:45:17 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • kernliebers-com01b.mail.protection.outlook.com

MX Priorities

  • kernliebers-com01b.mail.protection.outlook.com: 10

A / AAAA Records

  • 18.198.166.35 ↩ bamberg.jweiland.cloud
  • 2a05:d014:14f:aa0c:35c3:4b6c:75cd:6ca0 ↩ bamberg.jweiland.cloud

Mail Server IPs

  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com

SOA Record

Raw SOA ns-900.awsdns-48.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-900.awsdns-48.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1434.awsdns-51.org
ns-1576.awsdns-05.co.uk
ns-305.awsdns-38.com
ns-900.awsdns-48.net

SPF Record

✓ Strict (-all)
v=spf1 +a +mx +a:bamberg.jweiland.cloud ip4:91.207.212.0/24 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:[email protected]; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

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

9 records
  • apple-domain-verification=WuyTxBMoCKXNTZZ6
  • apple-domain-verification=cpTdLqlIFTW1gg4g
  • bw=yfPOKNYQVl+L0UWTm3KhJ9kgc071v6g60GH7t1vLrq5S
  • google-site-verification=9c-L8vBkmq8EeMw0YKb8P93GgAnGe0ge9DJph-ojfRE
  • swisssign-check=WsQwjGMWahjS3-9a1NWLENBJgeU
  • swisssign-check=uvQw_XBspuqRpIVw90xhKD9rx1E
  • v5aNKOXaVGdDbFNDGOghuoxYeRqlBbgovVMRJgwyF9/hNO1X/ckuoMP2FlH2h7hliaBk66bN5/7WQi6NX65/Vw==
  • SPFv=spf1 +a +mx +a:bamberg.jweiland.cloud ip4:91.207.212.0/24 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
  • 4re8vkuc7crcblp8dbgkl6g6qe
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for kern-liebers.com

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits