Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
as-schmertmann.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 02:47:32 UTC · ↺ Refresh
MX Hostnames
- asschmertmann-de0e.g-v1.mx.microsoft
MX Priorities
- asschmertmann-de0e.g-v1.mx.microsoft: 0
A / AAAA Records
- 79.133.54.126 ↩ bs01.de-fra1.unlimitedhosting.de
- 2a01:7e0::277:0:0:150:126 ↩ bs01.de-fra1.unlimitedhosting.de
Mail Server IPs
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.nodesecure.com mike.busse-computer.de 2025074536 43200 7200 1209600 600
Primary NS (mname)
ns1.nodesecure.com
Admin Email (rname)
mike@busse-computer.de
Serial
2025074536
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
ns1.nodesecure.com
ns2.nodesecure.de
SPF Record
✓ Strict (-all)
v=spf1 a ip4:195.4.133.240/29 include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms32341531
- SPFv=spf1 a ip4:195.4.133.240/29 include:spf.protection.outlook.com -all
- google-site-verification=bx-8pfqMROjJAr1SnxmX7uzNsL8baCVZdptTzchw91Y
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