Domain Overview
DNS: ✓ 1d ago
Checker: ✓ 1d ago
lopescastelo.adv.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 02:58:25 UTC · ↺ Refresh
MX Hostnames
- lopescastelo-adv-br.mail.protection.outlook.com
MX Priorities
- lopescastelo-adv-br.mail.protection.outlook.com: 300
A / AAAA Records
- 200.11.120.114 ↩ cpbr-sp3.erehost.com.br
Mail Server IPs
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
- 52.101.8.46 ↩ mail-dm6pr05cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
a.sec.dns.br hostmaster.registro.br 2026115000 86400 900 604800 900
Primary NS (mname)
a.sec.dns.br
Admin Email (rname)
hostmaster@registro.br
Serial
2026115000
Refresh
86400s
Retry
900s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
a.sec.dns.br
b.sec.dns.br
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf.lopescastelo.adv.br include:_spf.rdstation.com.br include:sendgrid.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
2 records- MS=ms81910673
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.lopescastelo.adv.br include:_spf.rdstation.com.br include:sendgrid.net ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for lopescastelo.adv.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits