Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
infra-masters.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 23:45:25 UTC · ↺ Refresh
MX Hostnames
- inframasters-de01c.mail.protection.outlook.com
MX Priorities
- inframasters-de01c.mail.protection.outlook.com: 10
A / AAAA Records
- 85.10.136.119 ↩ server.mci.nl
- 2a01:7c8:d007:579:5054:ff:fe88:3c59 ↩ server.mci.nl
Mail Server IPs
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.mijndnsserver.nl hostmaster.infra-masters.de 2026020505 28800 7200 2419200 86400
Primary NS (mname)
ns1.mijndnsserver.nl
Admin Email (rname)
hostmaster@infra-masters.de
Serial
2026020505
Refresh
28800s
Retry
7200s
Expire
2419200s
Minimum TTL
86400s
Nameservers (NS)
ns1.mijndnsserver.nl
ns4.mijndnsserver.net
ns3.mijndnsserver.eu
ns2.mijndnsserver.nl
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
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
1 record- SPFv=spf1 include:spf.protection.outlook.com -all
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