Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sealtelecom.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 00:06:24 UTC · ↺ Refresh
MX Hostnames
- sealtelecom-com-br.mail.protection.outlook.com
MX Priorities
- sealtelecom-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.69.103 (no PTR)
- 172.67.207.106 (no PTR)
- 2606:4700:3030::ac43:cf6a (no PTR)
- 2606:4700:3036::6815:4567 (no PTR)
Mail Server IPs
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
jack.ns.cloudflare.com dns.cloudflare.com 2398738352 10000 2400 604800 1800
Primary NS (mname)
jack.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398738352
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jack.ns.cloudflare.com
lana.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:149.72.133.166 include:spf.skymail.net.br include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100;
✓ Reject — strongest protection
📋 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
5 records- SPFv=spf1 ip4:149.72.133.166 include:spf.skymail.net.br include:spf.protection.outlook.com -all
- MS=21578E3823A22B47CE7F4B4689F93812FDA4B60E
- MS=ms49734500
- google-site-verification=6yMYMbBMa6mvuM_2IbGsvHmBPehID80glamdGa8MeIY
- smartsheet-site-validation=v8cRjvmJiHclU6FaId47STczUBGB4EYU
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