Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
thw-dresden.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 18:01:15 UTC · ↺ Refresh
MX Hostnames
- mail.thw-dresden.de
- thw-dresden.de
MX Priorities
- thw-dresden.de: 100
- mail.thw-dresden.de: 10
A / AAAA Records
- 128.140.34.26 ↩ mail.thw-dresden.de
Mail Server IPs
- 128.140.34.26 ↩ mail.thw-dresden.de
SOA Record
Raw SOA
hydrogen.ns.hetzner.com dns.hetzner.com 2026032703 86400 10800 3600000 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dns@hetzner.com
Serial
2026032703
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
oxygen.ns.hetzner.com
helium.ns.hetzner.de
hydrogen.ns.hetzner.com
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:128.140.34.26/32 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 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
2 records- SPFv=spf1 mx a ip4:128.140.34.26/32 -all
- MS=33D28CFCE830991E3547656DFCDA902238C30721
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