lambertus.de

Valid Email Server
Domain Lookup › lambertus.de

Domain Overview

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

Checked via [email protected] · 2026-03-21 12:13:44 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • caritas-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 194.6.210.50 ↩ app-a-cc.c-1954.maxcluster.net

Mail Server IPs

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

SOA Record

Raw SOA ns.frei.net hostmaster.freinet.de 2026012002 86400 7200 2592000 86400
Primary NS (mname)
ns.frei.net
Admin Email (rname)
hostmaster@freinet.de
Serial
2026012002
Refresh
86400s
Retry
7200s
Expire
2592000s
Minimum TTL
86400s

Nameservers (NS)

ns.frei.net
ns2.frei.net

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:78.46.132.71 ip4:195.135.144.19 ip4:195.135.144.51 ip4:194.6.210.50 ip4:45.90.5.220 ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.0/26 ip6:2a00:f48:1008::210:50:10 a:fgt.caritas.de a:mail.caritas.de include:_spf.senders.scnem.com include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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

4 records
  • MS=ms67098057
  • knowbe4-site-verification=ef0b34588a06a68823fa58edfdb60a51
  • SPFv=spf1 mx ip4:78.46.132.71 ip4:195.135.144.19 ip4:195.135.144.51 ip4:194.6.210.50 ip4:45.90.5.220 ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.0/26 ip6:2a00:f48:1008::210:50:10 a:fgt.caritas.de a:mail.caritas.de include:_spf.senders.scnem.com include:spf.protection.outlook.com -all
  • VQQtS5UwBTlJFCPUOcnLQltdlVOni/OIGpM5i6HvYvHt7bRI6eCDi2g7VfvnMvJOHcUZtkzYLkycjZRWxsK6ng==
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