Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
isp-solution.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 19:02:47 UTC · ↺ Refresh
MX Hostnames
- mail.isp-solution.de
MX Priorities
- mail.isp-solution.de: 10
A / AAAA Records
- 87.118.122.112 ↩ ms00-srv01.hosting.jts-online.de
Mail Server IPs
- 87.118.122.112 ↩ ms00-srv01.hosting.jts-online.de
SOA Record
Raw SOA
dns01.isp-solution.de hostmaster.isp-solution.de 2026032900 10800 3600 604800 86400
Primary NS (mname)
dns01.isp-solution.de
Admin Email (rname)
hostmaster@isp-solution.de
Serial
2026032900
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
dns01.isp-solution.de
dns02.isp-solution.de
SPF Record
✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=25
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 25% of failing messages only
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 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 a mx -all
Full email verification for isp-solution.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits