Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sigcorp.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 05:59:41 UTC · ↺ Refresh
MX Hostnames
- sigcorp-com-br.mail.protection.outlook.com
MX Priorities
- sigcorp-com-br.mail.protection.outlook.com: 1
A / AAAA Records
- 200.155.28.221 (no PTR)
Mail Server IPs
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.linode.com sysadm.sigcorp.com.br 2021000447 14400 14400 1209600 3600
Primary NS (mname)
ns1.linode.com
Admin Email (rname)
sysadm@sigcorp.com.br
Serial
2021000447
Refresh
14400s
Retry
14400s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns3.linode.com
ns4.linode.com
ns5.linode.com
ns1.linode.com
ns2.linode.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
1 record- SPFv=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net -all
Full email verification for sigcorp.com.br
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