Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
studentenwerk-ulm.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 07:57:31 UTC · ↺ Refresh
MX Hostnames
- b2951.mx.srv.dfn.de
- c2951.mx.srv.dfn.de
- a2951.mx.srv.dfn.de
MX Priorities
- a2951.mx.srv.dfn.de: 10
- b2951.mx.srv.dfn.de: 10
- c2951.mx.srv.dfn.de: 10
A / AAAA Records
- 88.99.7.236 ↩ studierendenwerk1.cortex-media.de
Mail Server IPs
- 194.95.233.89 ↩ a2951.mx.srv.dfn.de
- 2001:638:d:c301:acdc:1979:2:111 ↩ a2951.mx.srv.dfn.de
- 194.95.235.89 ↩ b2951.mx.srv.dfn.de
- 2001:638:d:c302:acdc:1979:2:111 ↩ b2951.mx.srv.dfn.de
- 194.95.239.89 ↩ c2951.mx.srv.dfn.de
- 2001:638:d:c303:acdc:1979:2:111 ↩ c2951.mx.srv.dfn.de
SOA Record
Raw SOA
dns1.uni-ulm.de hostmaster.uni-ulm.de 2026012602 21600 3600 1209600 3600
Primary NS (mname)
dns1.uni-ulm.de
Admin Email (rname)
hostmaster@uni-ulm.de
Serial
2026012602
Refresh
21600s
Retry
3600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns1.belwue.de
dns1.uni-ulm.de
dns3.belwue.de
dns5.belwue.de
SPF Record
✓ Soft Fail (~all)
v=spf1 redirect=_spf.uni-ulm.de
📊 DNS lookups: 1/10
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 redirect=_spf.uni-ulm.de
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