Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
st-promotions.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 14:51:26 UTC · ↺ Refresh
MX Hostnames
- mail.st-promotions.de
MX Priorities
- mail.st-promotions.de: 10
A / AAAA Records
- 167.235.94.206 ↩ host-polaris.brave-systems.de
- 2a01:4f8:2220:1ada::2 ↩ host-polaris.brave-systems.de
Mail Server IPs
- 167.235.94.206 ↩ host-polaris.brave-systems.de
- 2a01:4f8:2220:1ada::2 ↩ host-polaris.brave-systems.de
SOA Record
Raw SOA
ns.inwx.de hostmaster.inwx.de 2026032500 10800 3600 604800 3600
Primary NS (mname)
ns.inwx.de
Admin Email (rname)
hostmaster@inwx.de
Serial
2026032500
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.inwx.de
ns3.inwx.eu
ns2.inwx.de
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +a:host-polaris.brave-systems.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
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
6 records- altcha-verification=7f5904696d4cbb01
- SPFv=spf1 +a +mx +a:host-polaris.brave-systems.de -all
- MS=ms40467405
- google-site-verification=d1cyI3JQrFvgHL4kOrj7oqzn8yo28jKd-nSVNCxpMhk
- google-site-verification=Ra8lYjfFOExU5U1Z-FQwo1N6LmXDn7Vj6ZpQvimWpNE
- apple-domain-verification=sJF5EMoNvy87DBFwZIZCm5RXEd2DPT8aD73k9j0DVuI
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for st-promotions.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits