Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koeppern.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 18:22:32 UTC · ↺ Refresh
MX Hostnames
- mail.koeppern.de
MX Priorities
- mail.koeppern.de: 10
A / AAAA Records
- 217.160.0.6 ↩ 217-160-0-6.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::287 ↩ 2001-08d8-100f-f000-0000-0000-0000-0287.elastic-ssl.ui-r.com
Mail Server IPs
- 217.6.253.99 ↩ mail.koeppern.de
SOA Record
Raw SOA
ns3.kundenserver.de hostmaster.kundenserver.de 2013072146 28800 7200 604800 300
Primary NS (mname)
ns3.kundenserver.de
Admin Email (rname)
hostmaster@kundenserver.de
Serial
2013072146
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns4.kundenserver.de
ns3.kundenserver.de
SPF Record
✓ Strict (-all)
v=spf1 a:mail.koeppern.de include:spf.protection.outlook.com include:_spf.kundenserver.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=10;ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
⚠ Policy applies to 10% of failing messages only
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- google-site-verification=f74DkrGfgqnorqna0b_JMa2X1DQOqPMbQd8kAmMtnnU
- SPFv=spf1 a:mail.koeppern.de include:spf.protection.outlook.com include:_spf.kundenserver.de -all
- MS=ms37077633
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