serko.de

Valid Email Server
Domain Lookup › serko.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
serko.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-04 15:12:01 UTC · ↺ Refresh

MX Hostnames

  • smtpin.rzone.de

MX Priorities

  • smtpin.rzone.de: 5

A / AAAA Records

  • 81.169.145.69 ↩ w05.rzone.de
  • 2a01:238:20a:202:1069:: ↩ w05.rzone.de

Mail Server IPs

  • 81.169.145.97 ↩ smtpin.rzone.de
  • 2a01:238:20a:202:50f0::1097 ↩ smtpin.rzone.de

SOA Record

Raw SOA docks11.rzone.de hostmaster.strato-rz.de 2020054477 86400 7200 604800 300
Primary NS (mname)
docks11.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020054477
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

shades18.rzone.de
docks11.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 mx a include:mymailwall.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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
  • spcheck=0ed515507196c6d345766a787e9c00201fcac5c0a2886444d1afb6f9b90b2674
  • SPFv=spf1 mx a include:mymailwall.com -all
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