Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rez-immo.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:17:30 UTC · ↺ Refresh
MX Hostnames
- rezimmo-de0i.mail.protection.outlook.com
MX Priorities
- rezimmo-de0i.mail.protection.outlook.com: 0
A / AAAA Records
- 104.20.27.124 (no PTR)
- 172.66.144.158 (no PTR)
- 2606:4700:10::6814:1b7c
- 2606:4700:10::ac42:909e
Mail Server IPs
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
aitana.ns.cloudflare.com dns.cloudflare.com 2397966513 10000 2400 604800 1800
Primary NS (mname)
aitana.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397966513
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
aitana.ns.cloudflare.com
neil.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.perfora.net include:_spf.kundenserver.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf.protection.outlook.com include:_spf.perfora.net include:_spf.kundenserver.de -all
- brevo-code:21c730d6d11d23db41b82633330ffeb6
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