Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
thphys.uni-heidelberg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 02:33:51 UTC · ↺ Refresh
MX Hostnames
- relay2.uni-heidelberg.de
- relay.uni-heidelberg.de
- relay3.uni-heidelberg.de
MX Priorities
- relay2.uni-heidelberg.de: 0
- relay.uni-heidelberg.de: 0
- relay3.uni-heidelberg.de: 0
A / AAAA Records
- 129.206.28.20 ↩ jensen.thphys.uni-heidelberg.de
Mail Server IPs
- 129.206.119.212 ↩ relay2.uni-heidelberg.de
- 129.206.100.212 ↩ relay.uni-heidelberg.de
- 129.206.100.213 ↩ relay3.uni-heidelberg.de
SOA Record
Raw SOA
jensen.thphys.uni-heidelberg.de root.jensen.thphys.uni-heidelberg.de 2026004559 300 1800 720000 6400
Primary NS (mname)
jensen.thphys.uni-heidelberg.de
Admin Email (rname)
root@jensen.thphys.uni-heidelberg.de
Serial
2026004559
Refresh
300s
Retry
1800s
Expire
720000s
Minimum TTL
6400s
Nameservers (NS)
jensen.thphys.uni-heidelberg.de
SPF Record
✓ Strict (-all)
v=spf1 mx a:relays.uni-heidelberg.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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 mx a:relays.uni-heidelberg.de -all
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