Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
iwserver.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 23:54:59 UTC · ↺ Refresh
MX Hostnames
- mail.iwserver.com.br
MX Priorities
- mail.iwserver.com.br: 10
A / AAAA Records
- 187.0.144.26 ↩ app1.iw.net.br
Mail Server IPs
- 187.0.144.26 ↩ app1.iw.net.br
SOA Record
Raw SOA
iwserver.com.br suporte.iwserver.com.br 2025043001 3600 600 14400 3600
Primary NS (mname)
iwserver.com.br
Admin Email (rname)
suporte@iwserver.com.br
Serial
2025043001
Refresh
3600s
Retry
600s
Expire
14400s
Minimum TTL
3600s
Nameservers (NS)
ns1.iwserver.com.br
ns2.iwserver.com.br
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:187.0.144.26/32 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto: [email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto: [email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 mx a ip4:187.0.144.26/32 -all
- google-site-verification=9C6BY9Z5ym3_0gr3-hUyS46UPFFjLYM1ajMK8T79o0M
- d4sign-domain-verification=a9c4173a-9697-432b-9176-4f3e56dd1d25
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 · Customize →
See demo & docs
Deep verification
Full email verification for iwserver.com.br
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits