Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
renneberg-gruppe.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 06:52:20 UTC · ↺ Refresh
MX Hostnames
- mail.renneberg-service.de
MX Priorities
- mail.renneberg-service.de: 10
A / AAAA Records
- 178.16.57.158 ↩ r32868.agenturserver.it
Mail Server IPs
- 217.7.154.202 ↩ mail.renneberg-service.de
SOA Record
Raw SOA
pns.dtag.de dns.telekom.de 2026032000 10800 3600 2419200 3600
Primary NS (mname)
pns.dtag.de
Admin Email (rname)
dns@telekom.de
Serial
2026032000
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
pns.dtag.de
ns1.telekom.net
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:87.129.24.120/29 ip4:217.7.154.200/29 ip4:217.5.149.26 include:spf.crsend.com include:agenturserver.de -all
📊 DNS lookups: 3/10
✓ 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
3 records- _globalsign-domain-verification=EvncE4hap7gfcDu4RPNaBofNd-NyrPWcJPO9CEaCBC
- MS=ms26315706
- SPFv=spf1 mx ip4:87.129.24.120/29 ip4:217.7.154.200/29 ip4:217.5.149.26 include:spf.crsend.com include:agenturserver.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 renneberg-gruppe.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits