Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fischer-klause.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 23:24:58 UTC · ↺ Refresh
MX Hostnames
- mail.fischer-klause.de
MX Priorities
- mail.fischer-klause.de: 10
A / AAAA Records
- 157.90.6.102 ↩ web40.isuma.de
Mail Server IPs
- 157.90.6.102 ↩ web40.isuma.de
SOA Record
Raw SOA
ns40.isuma.de kontakt.isuma.de 2026031701 10800 3600 604800 10800
Primary NS (mname)
ns40.isuma.de
Admin Email (rname)
kontakt@isuma.de
Serial
2026031701
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns50.isuma.de
ns51.isuma.de
ns40.isuma.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf40.isuma.de ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; ruf=mailto:[email protected]; rua=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:_spf40.isuma.de ~all
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