Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
positron.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 04:36:30 UTC · ↺ Refresh
MX Hostnames
- positron-com-br.mail.protection.outlook.com
MX Priorities
- positron-com-br.mail.protection.outlook.com: 10
A / AAAA Records
- 92.113.37.49 (no PTR)
Mail Server IPs
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
- 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1378.awsdns-44.org suporte.pst.com.br 2019092313 7200 900 1209600 86400
Primary NS (mname)
ns-1378.awsdns-44.org
Admin Email (rname)
suporte@pst.com.br
Serial
2019092313
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1378.awsdns-44.org
ns-200.awsdns-25.com
ns-2022.awsdns-60.co.uk
ns-997.awsdns-60.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:201.77.196.34/32 ip4:201.77.196.35/32 ip4:201.77.193.64/28 ip4:186.232.243.0/24 ip4:54.85.174.110/32 ip4:54.86.194.232/32 include:spf.protection.outlook.com include:awsmail.positron.com.br -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- amazonses:IALoWbq/ktU908twOOeC9UDc2M/92uKLXzUQCV7YoGo=
- SPFv=spf1 ip4:201.77.196.34/32 ip4:201.77.196.35/32 ip4:201.77.193.64/28 ip4:186.232.243.0/24 ip4:54.85.174.110/32 ip4:54.86.194.232/32 include:spf.protection.outlook.com include:awsmail.positron.com.br -all
- MS=ms27149848
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