Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cb-net.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 11:38:35 UTC · ↺ Refresh
MX Hostnames
- cbnet-de0e.mail.protection.outlook.com
MX Priorities
- cbnet-de0e.mail.protection.outlook.com: 10
A / AAAA Records
- 217.160.0.75 ↩ 217-160-0-75.elastic-ssl.ui-r.com
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::1 ↩ mail-fr4p281cu03101.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::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.hostserv.eu hostmaster.cb-net.de 2023021701 7200 120 2419200 10800
Primary NS (mname)
ns1.hostserv.eu
Admin Email (rname)
hostmaster@cb-net.de
Serial
2023021701
Refresh
7200s
Retry
120s
Expire
2419200s
Minimum TTL
10800s
Nameservers (NS)
ns3.hostserv.eu
ns1.hostserv.eu
ns2.hostserv.eu
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];pct=100;ruf=mailto:[email protected];fo=0:d:s;aspf=r;adkim=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
2 records- MS=ms37517440
- SPFv=spf1 include:spf.protection.outlook.com -all
Full email verification for cb-net.de
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