Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
systemsix.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 12:54:00 UTC · ↺ Refresh
MX Hostnames
- systemsix-com.mail.protection.outlook.com
MX Priorities
- systemsix-com.mail.protection.outlook.com: 1
A / AAAA Records
- 104.17.144.110 (no PTR)
- 104.17.145.110 (no PTR)
- 2606:4700::6811:906e
- 2606:4700::6811:916e
Mail Server IPs
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.41.54 ↩ mail-sj2pr05cu00506.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
fred.ns.cloudflare.com dns.cloudflare.com 2398186543 10000 2400 604800 1800
Primary NS (mname)
fred.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398186543
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
gina.ns.cloudflare.com
fred.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:24478504.spf04.hubspotemail.net include:_spf.psm.knowbe4.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 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
3 records- google-site-verification=N72rVLzAu101GcJjJYyT_7PSHfW7KKaq8C35_Ec_EnA
- SPFv=spf1 include:spf.protection.outlook.com include:24478504.spf04.hubspotemail.net include:_spf.psm.knowbe4.com -all
- MS=ms29417498
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