Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
circuitronix.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 13:02:33 UTC · ↺ Refresh
MX Hostnames
- ctx305.mail.protection.outlook.com
MX Priorities
- ctx305.mail.protection.outlook.com: 5
A / AAAA Records
- 104.26.0.188 (no PTR)
- 172.67.69.220 (no PTR)
- 104.26.1.188
- 2606:4700:20::ac43:45dc
- 2606:4700:20::681a:1bc
- 2606:4700:20::681a:bc
Mail Server IPs
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
- 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
mimi.ns.cloudflare.com dns.cloudflare.com 2399495918 10000 2400 604800 1800
Primary NS (mname)
mimi.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399495918
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
mimi.ns.cloudflare.com
rustam.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:mailgun.org -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; adkim=s; aspf=s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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
2 records- apple-domain-verification=fCUYOivXY9cnqt7B
- SPFv=spf1 include:spf.protection.outlook.com include:mailgun.org -all
Full email verification for circuitronix.com
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