Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sistac.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 23:41:31 UTC · ↺ Refresh
MX Hostnames
- sistac-com-br.mail.protection.outlook.com
MX Priorities
- sistac-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 191.252.83.246 (no PTR)
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f90f:: ↩ mail-sa9pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.locaweb.com.br postmaster.locaweb.com.br 2026022501 3600 600 1209600 3600
Primary NS (mname)
ns1.locaweb.com.br
Admin Email (rname)
postmaster@locaweb.com.br
Serial
2026022501
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns2.locaweb.com.br
ns3.locaweb.com.br
ns1.locaweb.com.br
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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
default._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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- _globalsign-domain-verification=FIQkEhOiNA2Le8JOIgBCVWigwfFetLu6LahoQdRjsd
Full email verification for sistac.com.br
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