Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
masterpolymers.com.br
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 15:17:21 UTC · ↺ Refresh
MX Hostnames
- masterpolymers-com-br.mail.protection.outlook.com
MX Priorities
- masterpolymers-com-br.mail.protection.outlook.com: 0
A / AAAA Records
- 177.55.111.8 (no PTR)
Mail Server IPs
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c946::7 ↩ mail-ch5pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns534.umbler.com admin.umbler.com 34 1200 600 1209600 3600
Primary NS (mname)
ns534.umbler.com
Admin Email (rname)
admin@umbler.com
Serial
34
Refresh
1200s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns148.umbler.in
ns283.umbler.com.br
ns534.umbler.com
ns840.umbler.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.rdstation.com.br include:sendgrid.net ~allv=spf1 include:_spf.rdstation.com.br include:sendgrid.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 include:_spf.rdstation.com.br include:sendgrid.net ~allv=spf1 include:_spf.rdstation.com.br include:sendgrid.net ~all
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=eD1AJcj2Tspli89XkZY-Y3LQDfVdIAJtuAcLru5F_pU
Full email verification for masterpolymers.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits