Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
buero-schirrmacher.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 22:30:56 UTC · ↺ Refresh
MX Hostnames
- mx4.agenturserver.de
- mx3.agenturserver.de
- mx1.agenturserver.de
- mx2.agenturserver.de
MX Priorities
- mx4.agenturserver.de: 50
- mx1.agenturserver.de: 10
- mx3.agenturserver.de: 20
- mx2.agenturserver.de: 10
A / AAAA Records
- 185.181.132.12 ↩ r32090.agenturserver.it
Mail Server IPs
- 185.15.192.59 ↩ mx4.agenturserver.de
- 185.15.192.56 ↩ mx1.agenturserver.de
- 185.15.192.58 ↩ mx3.agenturserver.de
- 185.15.192.57 ↩ mx2.agenturserver.de
SOA Record
Raw SOA
nsa7.schlundtech.de info.surfboxx-it.de 2025062300 43200 7200 1209600 600
Primary NS (mname)
nsa7.schlundtech.de
Admin Email (rname)
info@surfboxx-it.de
Serial
2025062300
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
nsb7.schlundtech.de
nsc7.schlundtech.de
nsd7.schlundtech.de
nsa7.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 a include:agenturserver.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 288 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 include:agenturserver.de -all
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