Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csc.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-02 17:04:15 UTC · ↺ Refresh
MX Hostnames
- mail.csc.de
- mail2.csc.de
MX Priorities
- mail2.csc.de: 20
- mail.csc.de: 10
A / AAAA Records
- 167.233.6.107 ↩ www.csc.de
- 2a01:4f8:fff0:69::107 ↩ www.csc.de
Mail Server IPs
- 167.233.4.221 ↩ mail2.csc.de
- 2a01:4f8:fff0:69::221 ↩ mail2.csc.de
- 167.233.6.126 ↩ mail.csc.de
- 2a01:4f8:fff0:69::126 ↩ mail.csc.de
SOA Record
Raw SOA
mail.csc.de root.csc.de 2024120401 86400 10800 604800 86400
Primary NS (mname)
mail.csc.de
Admin Email (rname)
root@csc.de
Serial
2024120401
Refresh
86400s
Retry
10800s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns2.saxony.net
ns1.saxony.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:167.233.6.126/32 a mx a:csc.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; aspf=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:167.233.6.126/32 a mx a:csc.de -all
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