Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nova-institut.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 16:54:54 UTC · ↺ Refresh
MX Hostnames
- mail01.nova-institut.net
MX Priorities
- mail01.nova-institut.net: 10
A / AAAA Records
- 172.67.221.77 (no PTR)
- 104.21.86.152 (no PTR)
- 2606:4700:3034::ac43:dd4d (no PTR)
- 2606:4700:3033::6815:5698 (no PTR)
Mail Server IPs
- 188.40.143.21 ↩ mail01.nova-institut.net
SOA Record
Raw SOA
angela.ns.cloudflare.com dns.cloudflare.com 2399030670 10000 2400 604800 1800
Primary NS (mname)
angela.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399030670
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
marek.ns.cloudflare.com
angela.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:144.76.107.187 ip4:49.12.130.38 a:dd26734.kasserver.com a:w01e2455.kasserver.com a:w01c37f3.kasserver.com a:mail01.nova-institut.net include:_spf.zimpel.de -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; fo=0:1; adkim=r; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx ip4:144.76.107.187 ip4:49.12.130.38 a:dd26734.kasserver.com a:w01e2455.kasserver.com a:w01c37f3.kasserver.com a:mail01.nova-institut.net include:_spf.zimpel.de -all
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