Domain Overview
DNS: ✓ 21h ago
Checker: ✓ 21h ago
arnaldocastro.com.uy
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 05:30:36 UTC · ↺ Refresh
MX Hostnames
- arnaldocastro-com-uy.mail.protection.outlook.com
MX Priorities
- arnaldocastro-com-uy.mail.protection.outlook.com: 5
A / AAAA Records
- 20.206.97.74 (no PTR)
Mail Server IPs
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-04.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-04.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-04.azure-dns.info
ns1-04.azure-dns.com
ns2-04.azure-dns.net
ns3-04.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:190.0.152.48 include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
4 records- google-site-verification=dGaNAT1khmZiCKLl4aDW57JPekU5w7oDVmO5DZj_uZo
- webexdomainverification.M4ZV=40f4c585-d892-475f-a039-a0ac866f3639
- SPFv=spf1 mx ip4:190.0.152.48 include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org -all
- ibOAWqONvkKoglf6uXG0FtErIgX5jjVk8KNwdtl4iRrlcYYYyLCKBymviqM2yKrUOb9IgnqKXP7LP0mGzbumtQ==
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