Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
stef.com.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 04:18:58 UTC · ↺ Refresh
MX Hostnames
- stef-com-mx.mail.protection.outlook.com
MX Priorities
- stef-com-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.40.29 (no PTR)
- 172.67.174.222 (no PTR)
- 2606:4700:3032::ac43:aede
- 2606:4700:3030::6815:281d
Mail Server IPs
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.8.42 ↩ mail-dm6pr03cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
jeremy.ns.cloudflare.com dns.cloudflare.com 2397027118 10000 2400 604800 1800
Primary NS (mname)
jeremy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397027118
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jeremy.ns.cloudflare.com
sofia.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 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
✓ 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- MS=ms16408957
- SPFv=spf1 include:spf.protection.outlook.com -all
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