Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
doublecheck.com.br
Yes
✓ Yes
Amazon SES
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 07:36:08 UTC · ↺ Refresh
MX Hostnames
- inbound-smtp.us-east-1.amazonaws.com
MX Priorities
- inbound-smtp.us-east-1.amazonaws.com: 10
A / AAAA Records
- 18.173.219.83 ↩ server-18-173-219-83.jfk52.r.cloudfront.net
- 18.173.219.53 ↩ server-18-173-219-53.jfk52.r.cloudfront.net
- 18.173.219.54 ↩ server-18-173-219-54.jfk52.r.cloudfront.net
- 18.173.219.18 ↩ server-18-173-219-18.jfk52.r.cloudfront.net
Mail Server IPs
- 3.211.210.226 ↩ ec2-3-211-210-226.compute-1.amazonaws.com
- 44.206.9.87 ↩ ec2-44-206-9-87.compute-1.amazonaws.com
- 54.164.173.191 ↩ ec2-54-164-173-191.compute-1.amazonaws.com
- 44.210.166.32 ↩ ec2-44-210-166-32.compute-1.amazonaws.com
- 54.197.5.236 ↩ ec2-54-197-5-236.compute-1.amazonaws.com
SOA Record
Raw SOA
ns-752.awsdns-30.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-752.awsdns-30.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-159.awsdns-19.com
ns-1623.awsdns-10.co.uk
ns-752.awsdns-30.net
ns-1267.awsdns-30.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:amazonses.com include:mailgun.org ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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 include:amazonses.com include:mailgun.org ~all
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