Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbtwelve.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 18:16:32 UTC · ↺ Refresh
MX Hostnames
- rbtwelve-com.mail.protection.outlook.com
MX Priorities
- rbtwelve-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.11 (no PTR)
Mail Server IPs
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
SPF Record
✓ Strict (-all)
v=spf1 include:relay.mailchannels.net include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
8 records- google-site-verification=y_eEPiNUEKJl6YaWspfdfL2sTuzW2St8nrMCuaMazmc
- klaviyo-site-verification=TQVMAX
- apple-domain-verification=ScP0mPKhhDoP66bhE-KyOByQZu3pRhQ3OiMMQCLAWvI
- google-site-verification=g_4yR5jQZ4kjHTtMNLLcmkI33kg189C3XGDkgYgdjh0
- mscid=HbFPMAe8xsKG071aYYbjuiWvfGhki3O8pjkCSJw9T7P7DU9r/HR5f/OfWMC6a9HfebY6V96rfdKLSnMltAy+wA==
- SPFv=spf1 include:relay.mailchannels.net include:spf.protection.outlook.com -all
- 1password-site-verification=GAZTXQU4G5C27PM256QQEU2BJM
- google-site-verification=tmbiyOIwZLljKcOOKNj4037xi4_iLbSj6ZHvgEvnspw
Full email verification for rbtwelve.com
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