Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stb-buschmann.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 20:58:08 UTC · ↺ Refresh
MX Hostnames
- stbbuschmann-de0i.mail.protection.outlook.com
MX Priorities
- stbbuschmann-de0i.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.18 ↩ 217-160-0-18.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1101.ui-dns.com hostmaster.1und1.de 2016042010 28800 7200 604800 300
Primary NS (mname)
ns1101.ui-dns.com
Admin Email (rname)
hostmaster@1und1.de
Serial
2016042010
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1101.ui-dns.de
ns1101.ui-dns.biz
ns1101.ui-dns.com
ns1101.ui-dns.org
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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