Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kopfweb.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 11:53:20 UTC · ↺ Refresh
MX Hostnames
- sw.kopfweb.de
- sw2.kopfweb.de
MX Priorities
- sw2.kopfweb.de: 200
- sw.kopfweb.de: 10
A / AAAA Records
- 81.169.145.158 ↩ w9e.rzone.de
- 2a01:238:20a:202:1158:: ↩ w9e.rzone.de
Mail Server IPs
- 185.60.197.44 ↩ sw2.kopfweb.de
- 150.5.24.12 ↩ sw.kopfweb.de
SOA Record
Raw SOA
docks07.rzone.de hostmaster.strato-rz.de 2020050761 86400 7200 604800 300
Primary NS (mname)
docks07.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050761
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks07.rzone.de
shades01.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 mx a:sw.kopfweb.de ip4:150.5.24.12 ip4:185.60.197.44 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- atlassian-sending-domain-verification=f12c1fcd-ea92-4df8-a159-92f93b40ff53
- 20241104081218072sqnyh3tcpg6lk3ar3q5qgbfvn088dly8jd18samdo3mi93i
- MS=355BFB2AE6B6A00A51E26BCA10A3FF7C1166CED6
- atlassian-domain-verification=JWN3tgrUEUgasa3BVne8Lwfh3ACdSu/rDMykjZ75eBVEcwfmr2OXEtPNbqTzKXeX
- SPFv=spf1 mx a:sw.kopfweb.de ip4:150.5.24.12 ip4:185.60.197.44 -all
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 kopfweb.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits