alfons-koester.de

Valid Email Server
Domain Lookup › alfons-koester.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
alfons-koester.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 09:54:53 UTC · ↺ Refresh

MX Hostnames

  • ak-mail.jrdmail.net

MX Priorities

  • ak-mail.jrdmail.net: 10

A / AAAA Records

  • 81.169.145.152 ↩ w98.rzone.de
  • 2a01:238:20a:202:1152:: ↩ w98.rzone.de

Mail Server IPs

  • 178.254.20.15 ↩ ak-mail.jrdmail.net

SOA Record

Raw SOA docks05.rzone.de hostmaster.strato-rz.de 2020050840 86400 7200 604800 300
Primary NS (mname)
docks05.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050840
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks05.rzone.de
shades01.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:178.254.20.15 ip4:195.243.216.236 ip4:85.215.255.0/24 ip4:81.169.146.128/25 -all
📊 DNS lookups: 0/10
✓ 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
  • SPFv=spf1 ip4:178.254.20.15 ip4:195.243.216.236 ip4:85.215.255.0/24 ip4:81.169.146.128/25 -all
  • MS=FECF99045FA64980AD4A0BC9805E104D51A5D5AE
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