Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
lambert-akademie.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 21:51:53 UTC · ↺ Refresh
MX Hostnames
- mxlb.ispgateway.de
MX Priorities
- mxlb.ispgateway.de: 10
A / AAAA Records
- 172.67.70.3 (no PTR)
- 104.26.1.187 (no PTR)
- 104.26.0.187 (no PTR)
- 2606:4700:20::681a:bb (no PTR)
- 2606:4700:20::ac43:4603 (no PTR)
- 2606:4700:20::681a:1bb (no PTR)
Mail Server IPs
- 80.67.18.126 ↩ mxlb.ispgateway.de
SOA Record
Raw SOA
arch.ns.cloudflare.com dns.cloudflare.com 2400343406 10000 2400 604800 1800
Primary NS (mname)
arch.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400343406
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
arch.ns.cloudflare.com
donna.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:ispgateway.de include:sendgrid.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms38431229
- facebook-domain-verification=hdocnvf5xcpq0fv5kuv2s13xrd1a7f
- SPFv=spf1 include:ispgateway.de include:sendgrid.net ~all
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