Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rbjonline.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 08:30:46 UTC · ↺ Refresh
MX Hostnames
- rbjonline-com.mail.protection.outlook.com
MX Priorities
- rbjonline-com.mail.protection.outlook.com: 10
A / AAAA Records
- 173.249.147.86 ↩ cloudhost-2038507.us-west-1.nxcli.net
Mail Server IPs
No IPs resolved.
SOA Record
Raw SOA
ns1.nexcess.net hostmaster.rbjonline.com 1744653739 7200 2048 1048576 2560
Primary NS (mname)
ns1.nexcess.net
Admin Email (rname)
hostmaster@rbjonline.com
Serial
1744653739
Refresh
7200s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
ns1.nexcess.net
ns2.nexcess.net
ns3.nexcess.net
ns4.nexcess.net
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:173.249.147.86 include:relay.mailchannels.net +include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- NETORGFT2822277.onmicrosoft.com
- SPFv=spf1 +a +mx +ip4:173.249.147.86 include:relay.mailchannels.net +include:spf.protection.outlook.com -all
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