Domain Overview
DNS: ✓ 3d ago
Checker: ✓ 3d ago
sergetechmechanical.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-18 12:17:11 UTC · ↺ Refresh
MX Hostnames
- sergetechmechanical-com.mail.protection.outlook.com
MX Priorities
- sergetechmechanical-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.206.28 (no PTR)
- 104.21.42.137 (no PTR)
- 2606:4700:3030::6815:2a89
- 2606:4700:3035::ac43:ce1c
Mail Server IPs
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
brenda.ns.cloudflare.com dns.cloudflare.com 2403785172 10000 2400 604800 1800
Primary NS (mname)
brenda.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2403785172
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
guy.ns.cloudflare.com
brenda.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]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 include:spf.protection.outlook.com include:mailgun.org -all
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