Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rlk.uk-essen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 23:05:28 UTC · ↺ Refresh
MX Hostnames
- mx1.uk-essen.de
- mx3.uk-essen.de
- mx2.uk-essen.de
- mx4.uk-essen.de
MX Priorities
- mx2.uk-essen.de: 10
- mx4.uk-essen.de: 10
- mx3.uk-essen.de: 10
- mx1.uk-essen.de: 10
A / AAAA Records
- 132.252.146.146 ↩ www.hg.uni-duisburg-essen.de
Mail Server IPs
- 132.252.145.24 ↩ mx2.uk-essen.de
- 132.252.145.35 ↩ mx4.uk-essen.de
- 132.252.145.34 ↩ mx3.uk-essen.de
- 132.252.145.23 ↩ mx1.uk-essen.de
SOA Record
Raw SOA
ns1.uk-essen.de hostmaster.uk-essen.de 2023101801 14400 14400 604800 3600
Primary NS (mname)
ns1.uk-essen.de
Admin Email (rname)
hostmaster@uk-essen.de
Serial
2023101801
Refresh
14400s
Retry
14400s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.uk-essen.de
b.xnameserver.de
a.xnameserver.de
ns2.uk-essen.de
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ 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 -all
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