Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
redstonebc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 20:42:17 UTC · ↺ Refresh
MX Hostnames
- redstonebc-com.mail.protection.outlook.com
MX Priorities
- redstonebc-com.mail.protection.outlook.com: 0
A / AAAA Records
- 185.151.30.134 ↩ 185-151-30-134.ptr4.stackcp.net
- 2a07:7800::134 (no PTR)
Mail Server IPs
No IPs resolved.
SOA Record
Raw SOA
ns1.stackdns.com hostmaster.stackdns.com 1548250235 1800 900 1209600 300
Primary NS (mname)
ns1.stackdns.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1548250235
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns3.stackdns.com
ns1.stackdns.com
ns4.stackdns.com
ns2.stackdns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:217.68.241.207 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 ip4:217.68.241.207 include:spf.protection.outlook.com -all
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