Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
brentano-schule.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 03:01:32 UTC · ↺ Refresh
MX Hostnames
- mx01.ultes.systems
- mx02.ultes.systems
MX Priorities
- mailin100.dcpserver.de: 10
A / AAAA Records
- 91.99.72.167 ↩ web01.ultes.systems
- 2a01:4f8:1c1b:c6a4::1 (no PTR)
Mail Server IPs
- 212.53.180.5 ↩ mailin200.dcpserver.de
- 212.53.180.4 ↩ mailin200.dcpserver.de
- 212.53.180.6 ↩ mailin200.dcpserver.de
- 2a00:1f78:af02::5 ↩ mailin200.dcpserver.de
- 2a00:1f78:af02::6 ↩ mailin200.dcpserver.de
- 2a00:1f78:af02::4 ↩ mailin200.dcpserver.de
SOA Record
Raw SOA
auth1.artfiles.de hostmaster.artfiles.de 2026020603 28800 14400 806400 600
Primary NS (mname)
auth1.artfiles.de
Admin Email (rname)
hostmaster@artfiles.de
Serial
2026020603
Refresh
28800s
Retry
14400s
Expire
806400s
Minimum TTL
600s
Nameservers (NS)
auth1.artfiles.de
auth2.artfiles.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.dcpserver.de -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- apple-domain-verification=OOTeeAD5GuKUbjMG
- SPFv=spf1 include:spf.dcpserver.de -all
- MS=ms57417266
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