Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hsu-bibliothek.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 23:16:07 UTC · ↺ Refresh
MX Hostnames
- mailcluster-3.unibw-hamburg.de
- premail.unibw-hamburg.de
MX Priorities
- premail.unibw-hamburg.de: 20
- mailcluster-3.unibw-hamburg.de: 53
A / AAAA Records
- 139.11.40.164 ↩ bibpress.ub.hsu-hh.de
Mail Server IPs
- 139.11.5.52 ↩ premail.unibw-hamburg.de
- 139.11.5.103 ↩ mailcluster-3.unibw-hamburg.de
SOA Record
Raw SOA
auth-dns-1.unibw-hamburg.de hostadm.hsu-hh.de 2024053691 16384 900 1048576 2560
Primary NS (mname)
auth-dns-1.unibw-hamburg.de
Admin Email (rname)
hostadm@hsu-hh.de
Serial
2024053691
Refresh
16384s
Retry
900s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
dns-3.dfn.de
auth-dns-1.unibw-hamburg.de
auth-dns-3.unibw-hamburg.de
auth-dns-2.unibw-hamburg.de
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:139.11.5.0/24 ip4:139.11.10.0/24 ip4:137.193.247.0/24 ip4:139.11.80.0/22 ip4:139.11.40.0/24 ip4:193.174.240.0/24 ?all
📊 DNS lookups: 0/10
? Neutral (?all) — no enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:139.11.5.0/24 ip4:139.11.10.0/24 ip4:137.193.247.0/24 ip4:139.11.80.0/22 ip4:139.11.40.0/24 ip4:193.174.240.0/24 ?all
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