renggruppe.de

Valid Email Server
Domain Lookup › renggruppe.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
renggruppe.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 17:58:37 UTC · ↺ Refresh

MX Hostnames

  • renggruppe-de.mail.protection.outlook.com

MX Priorities

  • renggruppe-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 193.9.117.130 ↩ ac.rz-nbg.de

Mail Server IPs

  • 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com

SOA Record

Raw SOA hydrogen.ns.hetzner.com dns.hetzner.com 2026012800 86400 10800 3600000 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dns@hetzner.com
Serial
2026012800
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

hydrogen.ns.hetzner.com
oxygen.ns.hetzner.com
helium.ns.hetzner.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:194.25.159.161/29 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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

4 records
  • sophos-domain-verification=9c232f8e09e38782d03831c9392f5b30a77c61aaa74e97489c2d112cc50e6fbc
  • SPFv=spf1 ip4:194.25.159.161/29 include:spf.protection.outlook.com -all
  • zuHfi9rnl97AIRCkxK/HKLmgSggsMjkFLK6CvSXRvABJEL4cu/MFEGOvhV0KSXx435FTBo+JAaxjld/ky/Xkrw==
  • OHHZYZ8G8aQ6Iz8RRQiPcScqUdMM3bGgF3zZXlGvd/Rf0oADclZtSPutQMDuIP5zIN701tZX5IB6dHkUNcW0Ew==
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 renggruppe.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits