frankfurt-school-verlag.de

Valid Email Server
Domain Lookup › frankfurt-school-verlag.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
frankfurt-school-verlag.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 14:06:15 UTC · ↺ Refresh

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MX Hostnames

  • frankfurtschoolverlag-de02c1b.mail.protection.outlook.com

MX Priorities

  • frankfurtschoolverlag-de02c1b.mail.protection.outlook.com: 10

A / AAAA Records

  • 178.15.47.219 (no PTR)

Mail Server IPs

  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA ns6.sec-provider.de hostmaster.sec-provider.de 2022093001 7200 1800 2419200 3600
Primary NS (mname)
ns6.sec-provider.de
Admin Email (rname)
hostmaster@sec-provider.de
Serial
2022093001
Refresh
7200s
Retry
1800s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

ns5.sec-provider.de
ns6.sec-provider.de

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:178.15.47.196 ip4:178.15.47.197 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ 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

3 records
  • a9bFN4FAqyZtJkqgP4HU9dOaTd90VboP0CrY+eojB47bXS8HuQ8cmP/A8aHWrwK3E/IFz82dUp9chMYyZ8BXwQ==
  • SPFv=spf1 mx ip4:178.15.47.196 ip4:178.15.47.197 include:spf.protection.outlook.com -all
  • MS=ms61207038
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