Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bruening-immo.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 02:27:38 UTC · ↺ Refresh
MX Hostnames
- mx2.onoffice.de
- mx1.onoffice.de
- mx3.onoffice.de
MX Priorities
- mx1.onoffice.de: 10
- mx2.onoffice.de: 10
- mx3.onoffice.de: 20
A / AAAA Records
- 216.198.79.1 (no PTR)
Mail Server IPs
- 95.130.253.60 ↩ mx1.onoffice.de
- 95.130.253.71 ↩ mx2.onoffice.de
- 95.130.253.56 ↩ mx3.onoffice.de
SOA Record
Raw SOA
ns81.domaincontrol.com dns.jomax.net 2026033001 28800 7200 604800 600
Primary NS (mname)
ns81.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026033001
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns82.domaincontrol.com
ns81.domaincontrol.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a include:onoffice.de
📊 DNS lookups: 3/10
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a include:onoffice.de
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 bruening-immo.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits