Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ruebenack.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 19:29:31 UTC · ↺ Refresh
MX Hostnames
- ruebenack-de.mail.protection.outlook.com
MX Priorities
- ruebenack-de.mail.protection.outlook.com: 10
A / AAAA Records
- 185.76.237.184 (no PTR)
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
SOA Record
Raw SOA
ns01.comp-pro-dns.de hostmaster.comp-pro.de 2025050701 86400 7200 3024000 172800
Primary NS (mname)
ns01.comp-pro-dns.de
Admin Email (rname)
hostmaster@comp-pro.de
Serial
2025050701
Refresh
86400s
Retry
7200s
Expire
3024000s
Minimum TTL
172800s
Nameservers (NS)
ns02.comp-pro-dns.de
ns01.comp-pro-dns.de
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; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- MS=ms52137689
- SPFv=spf1 include:spf.protection.outlook.com -all
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