kerkhoff.com

Valid Email Server
Domain Lookup › kerkhoff.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
kerkhoff.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 13:51:48 UTC · ↺ Refresh

MX Hostnames

  • remote.kerkhoff.com

MX Priorities

  • remote.kerkhoff.com: 10

A / AAAA Records

  • 217.160.0.127 ↩ 217-160-0-127.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::200 ↩ 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com

Mail Server IPs

  • 212.202.248.170 ↩ remote.kerkhoff.com

SOA Record

Raw SOA ns1032.ui-dns.de hostmaster.1und1.com 2017060125 28800 7200 604800 600
Primary NS (mname)
ns1032.ui-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060125
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1063.ui-dns.com
ns1065.ui-dns.org
ns1032.ui-dns.de
ns1114.ui-dns.biz

SPF Record

✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No 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

2 records
  • SPFv=spf1 a mx -all
  • MS=984C5A73AF965E40595537C552C97CD80320F760
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