Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
kfv-osl.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-06 16:12:10 UTC · ↺ Refresh
MX Hostnames
- mail.kfv-osl.de
MX Priorities
- mail.kfv-osl.de: 10
A / AAAA Records
- 138.201.158.105 ↩ dedivirt103.your-server.de
Mail Server IPs
- 138.201.158.105 ↩ dedivirt103.your-server.de
SOA Record
Raw SOA
a.xnameserver.de hostmaster.inwx.de 2020011600 10800 3600 604800 3600
Primary NS (mname)
a.xnameserver.de
Admin Email (rname)
hostmaster@inwx.de
Serial
2020011600
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
b.xnameserver.de
a.xnameserver.de
c.xnameserver.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx a:mail.dedivirt103.your-server.de ?all
📊 DNS lookups: 3/10
? Neutral (?all) — no enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;pct=50;adkim=r;aspf=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
⚠ Policy applies to 50% of failing messages only
DKIM Selectors
✓ 4 found
selector1._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
⚠ Public key (p=) missing in DKIM record for selector selector1.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx a:mail.dedivirt103.your-server.de ?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 kfv-osl.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits