Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zimmermannundsohn.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 20:01:35 UTC · ↺ Refresh
MX Hostnames
- server02.mailbutler.net
- server01.mailbutler.net
- server03.mailbutler.net
MX Priorities
- server02.mailbutler.net: 20
- server03.mailbutler.net: 30
- server01.mailbutler.net: 10
A / AAAA Records
- 116.202.200.248 ↩ dedi6690.your-server.de
- 2a01:4f8:d0a:75d9::2 ↩ dedi6690.your-server.de
Mail Server IPs
- 217.92.37.168 ↩ pd95c25a8.dip0.t-ipconnect.de
- 136.243.0.177 ↩ server01.mailbutler.net
SOA Record
Raw SOA
ns1.cms-carrier.de support.variomedia.de 2024052527 28800 7200 1209600 86400
Primary NS (mname)
ns1.cms-carrier.de
Admin Email (rname)
support@variomedia.de
Serial
2024052527
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.cms-carrier.de
ns2.cms-carrier.de
SPF Record
✓ Strict (-all)
v=spf1 include:cms-carrier.de -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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 include:cms-carrier.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 zimmermannundsohn.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits