Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
michaelsschule.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 11:06:03 UTC · ↺ Refresh
MX Hostnames
- michaelsschule-de.mail.protection.outlook.com
MX Priorities
- michaelsschule-de.mail.protection.outlook.com: 10
A / AAAA Records
- 213.133.107.43 ↩ dedi6284.your-server.de
- 2a01:4f8:d0a:27e4::2 ↩ dedi6284.your-server.de
Mail Server IPs
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
SOA Record
Raw SOA
nsa9.schlundtech.de do-not-reply.michaelsschule.de 2023030501 43200 7200 1209600 86400
Primary NS (mname)
nsa9.schlundtech.de
Admin Email (rname)
do-not-reply@michaelsschule.de
Serial
2023030501
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsc9.schlundtech.de
nsd9.schlundtech.de
nsa9.schlundtech.de
nsb9.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -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
1 record- SPFv=spf1 include:spf.protection.outlook.com -all
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