onisys.com.br

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
onisys.com.br
Yes
โœ“ Yes
Outlook
No
No
โš  Yes
No
No

Checked via [email protected] ยท 2026-03-26 19:09:20 UTC ยท โ†บ Refresh

MX Hostnames

  • onisys-com-br.mail.protection.outlook.com

MX Priorities

  • onisys-com-br.mail.protection.outlook.com: 0

A / AAAA Records

  • 104.18.13.172 (no PTR)
  • 104.18.12.172 (no PTR)
  • 2606:4700::6812:dac
  • 2606:4700::6812:cac

Mail Server IPs

  • 52.101.200.0 โ†ฉ mail-roap284cu02600.inbound.protection.outlook.com
  • 52.101.198.1 โ†ฉ mail-cp4p284cu00401.inbound.protection.outlook.com
  • 52.101.198.38 โ†ฉ mail-cp3p284cu00706.inbound.protection.outlook.com
  • 52.101.198.0 โ†ฉ mail-cp5p284cu01800.inbound.protection.outlook.com
  • 2a01:111:f403:c94c:: โ†ฉ mail-roap284cu02600.inbound.protection.outlook.com
  • 2a01:111:f403:c94a::2 โ†ฉ mail-cp3p284cu00702.inbound.protection.outlook.com
  • 2a01:111:f403:c94a:: โ†ฉ mail-cp5p284cu01800.inbound.protection.outlook.com
  • 2a01:111:f403:c94a::1 โ†ฉ mail-cp4p284cu00401.inbound.protection.outlook.com

SOA Record

Raw SOA lovisa.ns.cloudflare.com dns.cloudflare.com 2399118393 10000 2400 604800 1800
Primary NS (mname)
lovisa.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399118393
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

lovisa.ns.cloudflare.com
marvin.ns.cloudflare.com

SPF Record

โœ“ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net include:23423180.spf01.hubspotemail.net ~all
๐Ÿ“Š DNS lookups: 4/10
~ Soft fail (~all) โ€” moderate enforcement

DMARC Record

โœ“ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
โœ“ Reject โ€” strongest protection
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]

DKIM Selectors

โœ“ 3 found
default._domainkey
s1._domainkey
s2._domainkey
โœ“ Public key: 392 chars (valid)
โœ“ DKIM properly configured for selector: default

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • google-site-verification=TEjlT9SO1rTiJXNxJjfncwOmKb8Uonh9pUKgkxUC7PQ
  • google-site-verification=umUxsxdXqEvpxWXHBipv7Lx7BSaaouEcwcrwFIEGihI
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.rdstation.com.br include:sendgrid.net include:23423180.spf01.hubspotemail.net ~all
  • MS=ms73287314
  • cursor-domain-verification-2rtefc=kgdfk9aGqPIjm1RDz7Z667ecR
Free ยท No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts โ€” unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for onisys.com.br

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits