Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
comatrix.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 18:37:35 UTC · ↺ Refresh
MX Hostnames
- comatrix-com-br.mail.protection.outlook.com
MX Priorities
- comatrix-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 168.0.134.6 ↩ weblinux17.skymail.net.br
Mail Server IPs
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 52.101.41.6 ↩ mail-sj0pr03cu01406.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
SOA Record
Raw SOA
ns1.skymail.net.br hostmaster.comatrix.com.br 1719876728 16384 2048 1048576 2560
Primary NS (mname)
ns1.skymail.net.br
Admin Email (rname)
hostmaster@comatrix.com.br
Serial
1719876728
Refresh
16384s
Retry
2048s
Expire
1048576s
Minimum TTL
2560s
Nameservers (NS)
ns3.skymail.net.br
ns2.skymail.net.br
ns1.skymail.net.br
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:_spf.mailersend.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
3 records- SPFv=spf1 include:spf.protection.outlook.com include:_spf.mailersend.net ~all
- google-site-verification=THQoHg7kkJLQxoJDRX8ZPEYAef91wWfxaRjCioc5PP0
- MS=ms80448660
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
Verify actual deliverability to comatrix.com.br
SMTP handshake, catch-all detection, custom validation rules, and Yahoo/Outlook/Gmail verification — know if the mailbox truly exists before you send.
Get 1,000 Free Credits