csb.com

Valid Email Server
Domain Lookup › csb.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
csb.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-23 04:10:22 UTC · ↺ Refresh

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MX Hostnames

  • mail02.csb.com

MX Priorities

  • mail02.csb.com: 20

A / AAAA Records

  • 31.204.117.146 ↩ csb-web-01.csb.recast-it.net

Mail Server IPs

  • 217.7.0.115 ↩ mail02.csb.de

SOA Record

Raw SOA srvdns1 webmaster.csb.de 2025120815 28800 7200 604800 86400
Primary NS (mname)
srvdns1
Admin Email (rname)
webmaster@csb.de
Serial
2025120815
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

pns.dtag.de
secondary004.dtag.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:217.7.0.10 ip4:217.7.0.115 ip4:31.204.117.146 include:spf.protection.outlook.com include:agenturserver.de include:2522963.spf02.hubspotemail.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; adkim=r; aspf=r; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 1 found
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: dkim

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

1 record
  • SPFv=spf1 ip4:217.7.0.10 ip4:217.7.0.115 ip4:31.204.117.146 include:spf.protection.outlook.com include:agenturserver.de include:2522963.spf02.hubspotemail.net -all
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