Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rkw.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 15:28:38 UTC · ↺ Refresh
MX Hostnames
- rkwkerio.rkw.de
MX Priorities
- rkwkerio.rkw.de: 10
A / AAAA Records
- 168.119.134.178 ↩ shield.rkw.de
- 2a01:4f8:fff0:8b::2 ↩ shield.rkw.de
Mail Server IPs
- 195.52.69.133 ↩ rkwkerio.rkw.de
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2026030203 14400 1800 1209600 600
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2026030203
Refresh
14400s
Retry
1800s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
robotns2.second-ns.de
robotns3.second-ns.com
ns1.first-ns.de
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a:mail.preeco.de ip4:78.137.100.8 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=5; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 5% of failing messages only
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- brevo-code:b4f33cd172417560ce5ffaab306d2686
- SPFv=spf1 mx a:mail.preeco.de ip4:78.137.100.8 ~all
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