Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rz57.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 23:33:46 UTC · ↺ Refresh
MX Hostnames
- mail.rz57.de
MX Priorities
- mail.rz57.de: 10
A / AAAA Records
- 78.46.216.1 ↩ mail.rz57.de
Mail Server IPs
- 78.46.216.1 ↩ mail.rz57.de
SOA Record
Raw SOA
ns2.rz57.de postmaster.rz57.de 2025060225 14400 1800 1209600 86400
Primary NS (mname)
ns2.rz57.de
Admin Email (rname)
postmaster@rz57.de
Serial
2025060225
Refresh
14400s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
robotns3.second-ns.com
ns2.rz57.de
robotns2.second-ns.de
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:78.46.216.1 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; aspf=r; adkim=r; ruf=mailto:[email protected]; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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 ip4:78.46.216.1 -all
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