Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
officesystem.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 21:43:43 UTC · ↺ Refresh
MX Hostnames
- mx.core.locaweb.com.br
- mx.b.locaweb.com.br
- mx.jk.locaweb.com.br
- mx.a.locaweb.com.br
MX Priorities
- mx.a.locaweb.com.br: 20
- mx.b.locaweb.com.br: 20
- mx.jk.locaweb.com.br: 30
- mx.core.locaweb.com.br: 10
A / AAAA Records
- 18.220.65.152 ↩ ec2-18-220-65-152.us-east-2.compute.amazonaws.com
Mail Server IPs
- 186.202.4.42 ↩ mx.a.locaweb.com.br
- 177.153.23.242 ↩ mx.b.locaweb.com.br
- 200.234.204.130 ↩ mx.jk.locaweb.com.br
- 177.153.23.241 ↩ mx.core.locaweb.com.br
SOA Record
Raw SOA
ns-262.awsdns-32.com awsdns-hostmaster.amazon.com 202104061 7200 900 1209600 86400
Primary NS (mname)
ns-262.awsdns-32.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
202104061
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-262.awsdns-32.com
ns-742.awsdns-28.net
ns-1081.awsdns-07.org
ns-2040.awsdns-63.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.locaweb.com.br include:spf.protection.outlook.com include:mailgrid.net.br ?all
📊 DNS lookups: 3/10
? Neutral (?all) — no enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;adkim=r;aspf=s;rua=mailto:[email protected];ruf=mailto:[email protected];fo=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=2456206E91BBCAF0C597E2827CD7567C8F93E19F
- SPFv=spf1 include:_spf.locaweb.com.br include:spf.protection.outlook.com include:mailgrid.net.br ?all
Full email verification for officesystem.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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