Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rpmkeystone.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 01:36:48 UTC · ↺ Refresh
MX Hostnames
- rpmkeystone-com.mail.protection.outlook.com
MX Priorities
- rpmkeystone-com.mail.protection.outlook.com: 10
A / AAAA Records
- 104.18.10.216 (no PTR)
- 104.18.11.216 (no PTR)
- 2606:4700::6812:ad8
- 2606:4700::6812:bd8
Mail Server IPs
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
amir.ns.cloudflare.com dns.cloudflare.com 2398541837 10000 2400 604800 1800
Primary NS (mname)
amir.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398541837
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
amir.ns.cloudflare.com
gail.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
2 records- MS=ms25894305
- SPFv=spf1 include:spf.protection.outlook.com -all
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