Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sks-stb.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 05:07:23 UTC · ↺ Refresh
MX Hostnames
- mx.sks-stb.de
MX Priorities
- mx.sks-stb.de: 1
A / AAAA Records
- 172.67.222.206 (no PTR)
- 104.21.75.116 (no PTR)
- 2606:4700:3034::ac43:dece (no PTR)
- 2606:4700:3034::6815:4b74 (no PTR)
Mail Server IPs
- 81.201.155.81 ↩ mx.sks-stb.de
SOA Record
Raw SOA
karina.ns.cloudflare.com dns.cloudflare.com 2395523417 10000 2400 604800 1800
Primary NS (mname)
karina.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2395523417
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
karina.ns.cloudflare.com
lochlan.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx a:mail.fp-sign.com a:lit01.liebschner-it.de a:mx.sks-stb.de include:spf.mxg.cloud ip4:37.27.136.50 include:spf.protection.outlook.com include:agenturserver.de -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; pct=100; adkim=r; aspf=r; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- _globalsign-domain-verification=5k_HdXQhRkRqqz9OsLJBtraNecfH-CYar1rBMPJsOx
- brevo-code:ad5d291c7a2f473d7f7ff2f200c98ec9
- domainVerification=156b1170-af12-46e5-811f-a28523f473ed
- facebook-domain-verification=hvukqkojjqc8xnwn3tt42lcnviol0x
- SPFv=spf1 mx a:mail.fp-sign.com a:lit01.liebschner-it.de a:mx.sks-stb.de include:spf.mxg.cloud ip4:37.27.136.50 include:spf.protection.outlook.com include:agenturserver.de -all
- v=verifydomain MS=9339791
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