Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mastermaq.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 13:33:42 UTC · ↺ Refresh
MX Hostnames
- mail.mastermaq.com.br
MX Priorities
- mail.mastermaq.com.br: 10
A / AAAA Records
- 52.4.55.114 ↩ ec2-52-4-55-114.compute-1.amazonaws.com
Mail Server IPs
- 201.48.145.97 ↩ mail.mastermaq.com.br
SOA Record
Raw SOA
ns-581.awsdns-08.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-581.awsdns-08.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-581.awsdns-08.net
ns-1466.awsdns-55.org
ns-1732.awsdns-24.co.uk
ns-349.awsdns-43.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:201.48.145.97 a mx mx:mail.mastermaq.com.br include:u1929208.wl.sendgrid.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; sp=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: quarantine
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
1 record- SPFv=spf1 ip4:201.48.145.97 a mx mx:mail.mastermaq.com.br include:u1929208.wl.sendgrid.net ~all
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