Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
merkur-startup.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 04:46:23 UTC · ↺ Refresh
MX Hostnames
- mx00.ionos.de
- mx01.ionos.de
MX Priorities
- mx00.ionos.de: 10
- mx01.ionos.de: 10
A / AAAA Records
- 46.101.174.202 ↩ 1365656.cloudwaysapps.com
Mail Server IPs
- 212.227.15.41 ↩ mx00.kundenserver.de
- 217.72.192.67 ↩ mx01.kundenserver.de
SOA Record
Raw SOA
ns.ui-global-dns.de hostmaster.1und1.com 2017060118 28800 7200 604800 600
Primary NS (mname)
ns.ui-global-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060118
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns.ui-global-dns.de
ns.ui-global-dns.com
ns.ui-global-dns.org
ns.ui-global-dns.biz
SPF Record
✓ Soft Fail (~all)
v=spf1 mx include:_spf.perfora.net include:_spf-eu.ionos.com include:spf.sendinblue.com include:_spf.kundenserver.de ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; pct=100; adkim=s; aspf=s; rua=mailto:[email protected],mailto:[email protected]; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- Sendinblue-code:9c951e6533009e0167767dd62258bf36
- google-site-verification=mw-mHOeszwZ98TPHzitf-LbrNGgVCvGhenwE4rmd3GI
- SPFv=spf1 mx include:_spf.perfora.net include:_spf-eu.ionos.com include:spf.sendinblue.com include:_spf.kundenserver.de ~all
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