Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
impfsystem.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 20:05:11 UTC · ↺ Refresh
MX Hostnames
- mail.impfsystem.de
MX Priorities
- mail.impfsystem.de: 10
A / AAAA Records
- 159.69.58.75 ↩ static.75.58.69.159.clients.your-server.de
Mail Server IPs
- 78.47.192.180 ↩ mail.impfsystem.de
SOA Record
Raw SOA
nsa5.schlundtech.de do-not-reply.impfsystem.de 2025110307 43200 7200 1209600 86400
Primary NS (mname)
nsa5.schlundtech.de
Admin Email (rname)
do-not-reply@impfsystem.de
Serial
2025110307
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsd5.schlundtech.de
nsc5.schlundtech.de
nsa5.schlundtech.de
nsb5.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=none; adkim=s; aspf=s; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 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
5 records- s4e-site-verification=e039095badafcaaadc85cfb53c754af9
- bsp7wcqxf277nczwkb5gt51mwq90krcm
- SPFv=spf1 mx -all
- google-site-verification=9PV_bUU8qEFzuvSSeXLRK5mycbY-ByI5ZnAJfEkBRR0
- detectify-verification=66b3c52b8413ff31fd639ffb436d7cff
Full email verification for impfsystem.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits