Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
packsys.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 03:28:55 UTC · ↺ Refresh
MX Hostnames
- packsys-com-br.mail.protection.outlook.com
- smtpvin2.f1.k8.com.br
MX Priorities
- packsys-com-br.mail.protection.outlook.com: 0
- smtpvin2.f1.k8.com.br: 10
A / AAAA Records
- 108.61.89.136 ↩ 108.61.89.136.vultrusercontent.com
- 45.55.107.236
- 104.156.247.183
- 2001:19f0:5:39fb:5400:4ff:fe7c:e4cc
- 2001:19f0:9002:1b90:5400:4ff:fe7c:e525
- 2604:a880:400:d0::1a3d:e001
Mail Server IPs
- 52.101.198.0 ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 52.101.200.0 ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 52.101.198.38 ↩ mail-cp3p284cu00706.inbound.protection.outlook.com
- 52.101.198.1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c94a::2 ↩ mail-cp3p284cu00702.inbound.protection.outlook.com
- 2a01:111:f403:c94a:: ↩ mail-cp5p284cu01800.inbound.protection.outlook.com
- 2a01:111:f403:c94a::1 ↩ mail-cp4p284cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c94c:: ↩ mail-roap284cu02600.inbound.protection.outlook.com
- 187.73.32.163 ↩ smtpvin2.f1.k8.com.br
SOA Record
Raw SOA
nsb1.k8.com.br dnsmasters.k8.com.br 1163 3600 300 604800 3600
Primary NS (mname)
nsb1.k8.com.br
Admin Email (rname)
dnsmasters@k8.com.br
Serial
1163
Refresh
3600s
Retry
300s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
nsb2.k8.com.br
nsb3.k8.com.br
nsb4.k8.com.br
nsb5.k8.com.br
nsb6.k8.com.br
nsb1.k8.com.br
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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
✓ 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
3 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms79228381
- MS=33D5B7D68BE7CF9393898C7204BBBE4E87345849
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 packsys.com.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits