Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zebra-mainz.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 15:55:35 UTC · ↺ Refresh
MX Hostnames
- mail15.itpsysteme.de
MX Priorities
- mail15.itpsysteme.de: 10
A / AAAA Records
- 104.21.42.24 (no PTR)
- 172.67.199.64 (no PTR)
- 2606:4700:3031::6815:2a18 (no PTR)
- 2606:4700:3033::ac43:c740 (no PTR)
Mail Server IPs
- 152.53.142.59 ↩ mail15.itpsysteme.de
SOA Record
Raw SOA
dave.ns.cloudflare.com dns.cloudflare.com 2397876672 10000 2400 604800 1800
Primary NS (mname)
dave.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397876672
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dave.ns.cloudflare.com
fay.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:185.243.11.47 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 mx ip4:185.243.11.47 -all
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