Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ikuwo.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 05:36:18 UTC · ↺ Refresh
MX Hostnames
- mx2.systemausfall.org
- mx1.systemausfall.org
MX Priorities
- mx2.systemausfall.org: 20
- mx1.systemausfall.org: 10
A / AAAA Records
- 80.153.252.42 ↩ cerebrum.nodes.systemausfall.org
Mail Server IPs
- 51.75.71.249 ↩ mail.systemausfall.org
- 80.153.252.42 ↩ cerebrum.nodes.systemausfall.org
SOA Record
Raw SOA
ns.udag.de hostmaster.united-domains.de 2023101904 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2023101904
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.udag.net
ns.udag.org
ns.udag.de
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=systemausfall.org
📊 DNS lookups: 1/10
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; 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: 736 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
1 record- SPFv=spf1 redirect=systemausfall.org
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 ikuwo.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits