Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
blinkfisch.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-06 14:41:42 UTC · ↺ Refresh
MX Hostnames
- server3.01null-hosting.de
MX Priorities
- server3.01null-hosting.de: 10
A / AAAA Records
- 135.181.58.18 ↩ server1.01null-hosting.de
Mail Server IPs
- 135.181.58.30 ↩ server3.01null-hosting.de
- 2a01:4f9:4b:3d0f::2 (no PTR)
SOA Record
Raw SOA
robotns2.second-ns.de jilly.blinkfisch.de 2026031401 3600 3600 1209600 10800
Primary NS (mname)
robotns2.second-ns.de
Admin Email (rname)
jilly@blinkfisch.de
Serial
2026031401
Refresh
3600s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
ns1.first-ns.de
server3.01null-hosting.de
robotns2.second-ns.de
robotns3.second-ns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:135.181.58.18 ip4:135.181.58.30 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 5 chars (valid)
⚠ Public key too short (5 chars) — DKIM may be invalid.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:135.181.58.18 ip4:135.181.58.30 -all
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