Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kfo-ulm-donau.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 13:53:54 UTC · ↺ Refresh
MX Hostnames
- mail.zag1.de
- relay.zag1.de
MX Priorities
- mail.zag1.de: 10
- relay.zag1.de: 20
A / AAAA Records
- 92.79.44.89 ↩ isp.zag1.de
Mail Server IPs
- 92.79.44.11 ↩ mail.zag1.de
- 92.79.44.120 ↩ relay.zag1.de
SOA Record
Raw SOA
dns103.ovh.net tech.ovh.net 2026032400 86400 3600 3600000 60
Primary NS (mname)
dns103.ovh.net
Admin Email (rname)
tech@ovh.net
Serial
2026032400
Refresh
86400s
Retry
3600s
Expire
3600000s
Minimum TTL
60s
Nameservers (NS)
dns103.ovh.net
ns103.ovh.net
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- google-site-verification=NlTbEkhLdv4_EKtEgg4qvA5qCaB0ro3MQIhhhvF__Bw
- SPFv=spf1 mx ~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 · Customize →
See demo & docs
Deep verification
Full email verification for kfo-ulm-donau.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits