Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kolping.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 03:40:41 UTC · ↺ Refresh
MX Hostnames
- mail3.kolping.de
- kolping-de.mail.protection.outlook.com
- mailout.kolping.de
MX Priorities
- mail3.kolping.de: 50
- mailout.kolping.de: 10
- kolping-de.mail.protection.outlook.com: 0
A / AAAA Records
- 78.46.3.223
Mail Server IPs
- 62.112.72.54 ↩ mail3.kolping.de
- 84.245.141.137 ↩ mailout.kolping.de
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
SOA Record
Raw SOA
a.ns14.net info.cool-space.de 2025122207 39940 14400 604800 43200
Primary NS (mname)
a.ns14.net
Admin Email (rname)
info@cool-space.de
Serial
2025122207
Refresh
39940s
Retry
14400s
Expire
604800s
Minimum TTL
43200s
Nameservers (NS)
a.ns14.net
c.ns14.net
d.ns14.net
b.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:_spf.jpberlin.de ip4:84.245.141.130 ip4:93.89.4.172 a:shop02.rackspeed-cloud.de a:shop03.rackspeed-cloud.de a:lsws-srv-1.rackspeed-cloud.de a:dedi5573.your-server.de include:spf.ticketareo.de include:oracleindustry.com include:_spf.zimpel.de -all
📊 DNS lookups: 10/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; aspf=r; adkim=r; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 392 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
5 records- google-site-verification=CJPSz7FpZBWdFP6F1lQVnBQOSOEZF9F_42WliD3PNsI
- SPFv=spf1 mx include:spf.protection.outlook.com include:_spf.jpberlin.de ip4:84.245.141.130 ip4:93.89.4.172 a:shop02.rackspeed-cloud.de a:shop03.rackspeed-cloud.de a:lsws-srv-1.rackspeed-cloud.de a:dedi5573.your-server.de include:spf.ticketareo.de include:oracleindustry.com include:_spf.zimpel.de -all
- adobe-idp-site-verification=a42f0f8a07b2a77ec96a1d0f7cda1bd3b33f8a9cda3f9618c5f2bac75f1e7e3c
- google-site-verification=O7-UISQeK3A0EtqFQcRJIInj53TZjfL8LX5w7ybywmk
- MS=ms65045992
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
See demo & docs
Deep verification
Full email verification for kolping.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits