chksum.de

Valid Email Server
Domain Lookup › chksum.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
chksum.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 13:28:25 UTC · ↺ Refresh

MX Hostnames

  • chksum.de

MX Priorities

  • chksum.de: 10

A / AAAA Records

  • 89.58.49.204 ↩ chksum.de
  • 2a03:4000:68:ff7:c8d1:e1ff:fe1b:c00d ↩ chksum.de

Mail Server IPs

  • 89.58.49.204 ↩ chksum.de
  • 2a03:4000:68:ff7:c8d1:e1ff:fe1b:c00d ↩ chksum.de

SOA Record

Raw SOA root-dns.netcup.net dnsadmin.netcup.net 2026031147 28800 7200 1209600 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2026031147
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

root-dns.netcup.net
third-dns.netcup.net
second-dns.netcup.net

SPF Record

✓ Strict (-all)
v=spf1 mx a:prod4.chksum.de a:home.chksum.de mx//64 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected]!1m; rf=afrf; pct=100; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

1 record
  • SPFv=spf1 mx a:prod4.chksum.de a:home.chksum.de mx//64 -all
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