Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fibrauno.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 01:31:16 UTC · ↺ Refresh
MX Hostnames
- fibrauno-mx.mail.protection.outlook.com
MX Priorities
- fibrauno-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 37.60.248.203 ↩ vmi2789227.contaboserver.net
Mail Server IPs
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.10.2 ↩ mail-bn8pr03cu00202.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c946::3 ↩ mail-ch0pr04cu00603.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-38.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-38.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns3-38.azure-dns.org
ns4-38.azure-dns.info
ns1-38.azure-dns.com
ns2-38.azure-dns.net
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:23.98.217.128 ip4:200.66.68.218 ip4:200.66.68.219 ip4:200.66.68.220 ip4:200.66.68.221 ip4:140.84.188.98 include:spf.protection.outlook.com include:spf.fromdoppler.com include:spfa.cpmails.com include:rp.oracleemaildelivery.com include:21297782.spf01.hubspotemail.net include:checkpointcloudsec.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
5 records- b292ec34-d0ff-4e21-a14c-9b9dd17c6c94
- SPFv=spf1 mx ip4:23.98.217.128 ip4:200.66.68.218 ip4:200.66.68.219 ip4:200.66.68.220 ip4:200.66.68.221 ip4:140.84.188.98 include:spf.protection.outlook.com include:spf.fromdoppler.com include:spfa.cpmails.com include:rp.oracleemaildelivery.com include:21297782.spf01.hubspotemail.net include:checkpointcloudsec.com -all
- fefdc7hrv9mn6fh07n9b1rpit3
- DS43DT8MTMRSSSQXWCS9XFP35TQK6SS9
- brevo-code:af9d2a6f3ac4bab23707ad316de7b26e
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