Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bycue.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 02:04:28 UTC · ↺ Refresh
MX Hostnames
- mx1.vkn.de
MX Priorities
- mx1.vkn.de: 100
A / AAAA Records
- 81.90.40.88 ↩ s-40-88.vkn.de
Mail Server IPs
- 81.90.40.80 ↩ mx1.vkn.de
SOA Record
Raw SOA
ns1.vkn.de webmaster.bycue.de 2025091801 7200 540 604800 3600
Primary NS (mname)
ns1.vkn.de
Admin Email (rname)
webmaster@bycue.de
Serial
2025091801
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.vkn.de
ns2.vkn.de
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a ~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 bycue.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits