Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cdu-bochum.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 21:25:41 UTC · ↺ Refresh
MX Hostnames
- mail.cdu-bochum.de
MX Priorities
- mail.cdu-bochum.de: 10
A / AAAA Records
- 193.32.223.134 ↩ srv5.sharkness.de
Mail Server IPs
- 157.90.137.225 ↩ vz1.thn-server.de
SOA Record
Raw SOA
dns.dns1.de hostmaster.internetwire.de 2024123101 28800 7200 604800 86400
Primary NS (mname)
dns.dns1.de
Admin Email (rname)
hostmaster@internetwire.de
Serial
2024123101
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
dns.dns4.de
dns.dns1.de
dns.dns3.de
dns.dns2.de
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];adkim=s;aspf=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
default._domainkey
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx -all
- brevo-code:5eaf3e716a58f6b6c4a4b1a6b3b918c3
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