Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kassen24.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 14:45:02 UTC · ↺ Refresh
MX Hostnames
- kassen24-de.mail.protection.outlook.com
MX Priorities
- kassen24-de.mail.protection.outlook.com: 0
A / AAAA Records
- 5.45.146.251 ↩ mpweb0005.ecomdata.de
- 2a10:b040:3::2:151 ↩ mpweb0005.ecomdata.de
Mail Server IPs
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ 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
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.ecomdata.de hostmaster.kassen24.de 2026020500 3600 3600 1209600 86400
Primary NS (mname)
ns1.ecomdata.de
Admin Email (rname)
hostmaster@kassen24.de
Serial
2026020500
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns3.ecomdata.de
ns1.ecomdata.de
ns2.ecomdata.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.brevo.com ip4:5.45.146.251 ip6:2a10:b040:3:0:0:0:2:151 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine; rua=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 1 found
selector1._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
3 records- brevo-code:6bc3f0ef09f711463b340b59bb5349f6
- SPFv=spf1 include:spf.protection.outlook.com include:spf.brevo.com ip4:5.45.146.251 ip6:2a10:b040:3:0:0:0:2:151 -all
- google-site-verification=uxalJQXVr91piGZicdCyIZFPjDSKMBslKjhQCxy7e10
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