Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kupplung.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 23:16:45 UTC · ↺ Refresh
MX Hostnames
- mail.kupplung.de
MX Priorities
- mail.kupplung.de: 10
A / AAAA Records
- 212.224.115.25 ↩ rameder.de
Mail Server IPs
- 62.154.174.130 ↩ mail.kupplung.de
SOA Record
Raw SOA
dns.rameder.de edv.kupplung.de 2025121900 28800 7200 604800 86400
Primary NS (mname)
dns.rameder.de
Admin Email (rname)
edv@kupplung.de
Serial
2025121900
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns2.bitfriends.de
ns1.bitfriends.de
dns.rameder.de
SPF Record
✓ Strict (-all)
v=spf1 mx a include:inxserver.de include:aspmx.pardot.com include:cust-spf.exacttarget.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
9 records- apple-domain-verification=pnoWuugPqtxEJy4t
- sending_domain1050052=4f62a555508a6654955b553561672e6775e992aa34abf34b89806297706e685e
- SPFv=spf1 mx a include:inxserver.de include:aspmx.pardot.com include:cust-spf.exacttarget.com include:spf.protection.outlook.com -all
- google-site-verification=ozC--tQaEsGlNkGuGCeNsgWlKLosXiDIn71ZlctHuPY
- MS=1FDA9DD1696E49C645917969902E6AB3D5721772
- pardot1050052=152f56d31a5d284550ec252b4975071143a0bd8fe2a35aaea46bc89bd7355fb4
- google-site-verification=xTflA3bZyo7LkOnpxuKoDtzu8La4_cu_HYX7qZxhoME
- MS=ms20785702
- pinterest-site-verification=ffa434ee336555aaabf7884093581ba0
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 kupplung.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits