Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
niendorf-gewerbeimmobilien.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 20:47:24 UTC · ↺ Refresh
MX Hostnames
- niendorfgewerbeimmobilien-de02b.mail.protection.outlook.com
- mail.niendorf-immobilien.de
MX Priorities
- mail.niendorf-immobilien.de: 200
- niendorfgewerbeimmobilien-de02b.mail.protection.outlook.com: 10
A / AAAA Records
- 85.13.137.63 ↩ dd43520.kasserver.com
Mail Server IPs
- 46.19.91.114 ↩ mail.niendorf-immobilien.de
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
docks10.rzone.de hostmaster.strato-rz.de 2020050727 86400 7200 604800 300
Primary NS (mname)
docks10.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050727
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
shades08.rzone.de
docks10.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 a ip4:46.19.91.114 include:spf.protection.outlook.com ip4:85.13.137.63 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a ip4:46.19.91.114 include:spf.protection.outlook.com ip4:85.13.137.63 -all
- MS=ms31057610
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 niendorf-gewerbeimmobilien.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits