Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cerna.com.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 03:16:37 UTC · ↺ Refresh
MX Hostnames
- cerna-com-mx.mail.protection.outlook.com
MX Priorities
- cerna-com-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 72.167.57.128 ↩ 128.57.167.72.host.secureserver.net
Mail Server IPs
- 52.101.232.3 ↩ mail-qr2p297cu00303.inbound.protection.outlook.com
- 52.101.232.1 ↩ mail-qr0p297cu00401.inbound.protection.outlook.com
- 52.101.232.2 ↩ mail-qr1p297cu00202.inbound.protection.outlook.com
- 52.101.232.0 ↩ mail-qr0p297cu00300.inbound.protection.outlook.com
- 2a01:111:f403:cc3a::3 ↩ mail-qr2p297cu00303.inbound.protection.outlook.com
- 2a01:111:f403:cc3a:: ↩ mail-qr0p297cu00300.inbound.protection.outlook.com
- 2a01:111:f403:cc3a::1 ↩ mail-qr0p297cu00401.inbound.protection.outlook.com
- 2a01:111:f403:cc3a::2 ↩ mail-qr1p297cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns41.domaincontrol.com dns.jomax.net 2025060113 28800 7200 604800 600
Primary NS (mname)
ns41.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025060113
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns42.domaincontrol.com
ns41.domaincontrol.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
✓ 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
3 records- MS=ms41974251
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=-IUjVmqI8VvaTxnjWXZ4LvI7xZ5lyGz0wTPEIOIBPIk
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