frerking-gmbh.de

Valid Email Server
Domain Lookup › frerking-gmbh.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
frerking-gmbh.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 16:33:45 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • frerkinggmbh-de02b.mail.protection.outlook.com: 0

A / AAAA Records

  • 91.203.111.19 ↩ server19.configcenter.info

Mail Server IPs

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

SOA Record

Raw SOA ns1.mwdns.de henkoch.googlemail.com 2024071703 10800 3600 604800 86400
Primary NS (mname)
ns1.mwdns.de
Admin Email (rname)
henkoch@googlemail.com
Serial
2024071703
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns2.mwdns.de
ns4.mwdns.de
ns1.mwdns.de
ns3.mwdns.de

SPF Record

✓ Strict (-all)
v=spf1 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

✗ None detected

No 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

4 records
  • v=spf2.0/pra mx ip4:87.253.162.0/24 ip4:31.47.240.0/20 ip4:91.203.108.0/22 ip4:212.48.119.192/27 include:secure-mailgate.com -all
  • sophos-domain-verification=61dd89d5e29ac832d0ed82c7552511651f1eeeb8ed3c730c38dcca565aa3d273
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms62648383
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