Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kerstan-computer.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 10:40:17 UTC · ↺ Refresh
MX Hostnames
- mail.kerstan-computer.de
MX Priorities
- mail.kerstan-computer.de: 10
A / AAAA Records
- 217.160.0.35 ↩ 217-160-0-35.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::254 ↩ 2001-08d8-100f-f000-0000-0000-0000-0254.elastic-ssl.ui-r.com
Mail Server IPs
- 80.81.26.172 ↩ host-80-81-26-172.customer.m-online.net
SOA Record
Raw SOA
ns1085.ui-dns.org hostmaster.1und1.com 2017060145 28800 7200 604800 600
Primary NS (mname)
ns1085.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060145
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1061.ui-dns.com
ns1053.ui-dns.de
ns1121.ui-dns.biz
ns1085.ui-dns.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf-eu.ionos.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=r;adkim=s;fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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 include:_spf-eu.ionos.com ~all
Full email verification for kerstan-computer.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits