Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
isab.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 13:46:20 UTC · ↺ Refresh
MX Hostnames
- mail.isab.de
- mail.isab-klitschmar.de
MX Priorities
- mail.isab-klitschmar.de: 10
- mail.isab.de: 20
A / AAAA Records
- 81.169.145.73 ↩ w09.rzone.de
- 2a01:238:20a:202:1073:: ↩ w09.rzone.de
Mail Server IPs
- 80.153.190.126 ↩ mail.isab-klitschmar.de
SOA Record
Raw SOA
docks03.rzone.de hostmaster.strato-rz.de 2021012651 86400 7200 604800 300
Primary NS (mname)
docks03.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2021012651
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
shades08.rzone.de
docks03.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:_spf.strato.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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 include:_spf.strato.com -all
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