ruettger-gruppe.de

Valid Email Server
Domain Lookup › ruettger-gruppe.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ruettger-gruppe.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 07:53:07 UTC · ↺ Refresh

MX Hostnames

  • ruettgergruppe-de02b.mail.protection.outlook.com

MX Priorities

  • ruettgergruppe-de02b.mail.protection.outlook.com: 10

A / AAAA Records

  • 81.169.143.122 ↩ iqserver.net

Mail Server IPs

  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com

SOA Record

Raw SOA docks03.rzone.de hostmaster.strato-rz.de 2020092561 86400 7200 604800 300
Primary NS (mname)
docks03.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020092561
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks03.rzone.de
shades09.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 mx a:seeberg-residences.de ip4:87.139.178.118 ip4:80.153.132.2 ip4:81.169.143.122 ip4:85.214.251.16 include:spf.protection.outlook.com include:143257312.spf02.hubspotemail.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 1 found
dkim._domainkey
✓ DKIM properly configured for selector: dkim

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • google-site-verification=WFeMvICJIW-B1-32RRXenTgM28NTRe4nQjzTEiFcgGk
  • MS=ms48266435
  • SPFv=spf1 mx a:seeberg-residences.de ip4:87.139.178.118 ip4:80.153.132.2 ip4:81.169.143.122 ip4:85.214.251.16 include:spf.protection.outlook.com include:143257312.spf02.hubspotemail.net -all
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