Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
correios.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 19:53:04 UTC · ↺ Refresh
MX Hostnames
- correios-com-br.mail.protection.outlook.com
MX Priorities
- correios-com-br.mail.protection.outlook.com: 10
A / AAAA Records
- 201.48.198.80 ↩ epost.gov.br
Mail Server IPs
- 52.101.198.38 ↩ mail-cp3p284cu00706.inbound.protection.outlook.com
- 52.101.198.0 ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 52.101.198.1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 52.101.200.0 ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 2a01:111:f403:c94a:: ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 2a01:111:f403:c94c:: ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 2a01:111:f403:c94a::1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c94a::2 ↩ mail-cp3p284cu00702.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.correios.com.br admindns.correios.com.br 2026032402 3600 1800 2419200 86400
Primary NS (mname)
ns1.correios.com.br
Admin Email (rname)
admindns@correios.com.br
Serial
2026032402
Refresh
3600s
Retry
1800s
Expire
2419200s
Minimum TTL
86400s
Nameservers (NS)
ns1.correios.com.br
ns2.correios.com.br
ns3.correios.com.br
ns4.correios.com.br
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com a:mx1.correios.com.br a:mx2.correios.com.br ip4:201.48.198.27 ip4:201.48.198.26 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=quarantine;pct=10;rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
⚠ Policy applies to 10% of failing messages only
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
7 records- S1H24bt45BKOdzQSNJxdQcLEKKvEF/r3bM+v1UZ+NtlUd9KFHEKSKTjLD3ZBqtEqfqg9iAB8cwExffGBkVLjKA==
- SPFv=spf1 mx include:spf.protection.outlook.com a:mx1.correios.com.br a:mx2.correios.com.br ip4:201.48.198.27 ip4:201.48.198.26 -all
- Dynatrace-site-verification=79b80282-44b0-4146-9b2d-43bc1b3ac606__qsqu821ai1ido281u1bc4rlfd6
- globalsign-domain-verification=Dmqwl5n2NjS3n0PNfcJV1juLpeRxmkeyCyW-gOSfJK
- MS=ms24967708
- MS=29C126E6850B5CBE7C210125FA2E751926849962
- google-site-verification=80BfDQu4N5U9hKTms4bM9q5UF3FzOpmgoZ3PzexUcvQ
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