Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cotriba.com.br
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 09:17:19 UTC · ↺ Refresh
MX Hostnames
- mx-01-us-east-2.prod.hydra.sophos.com
- mx-02-us-east-2.prod.hydra.sophos.com
MX Priorities
- mx-02-us-east-2.prod.hydra.sophos.com: 20
- mx-01-us-east-2.prod.hydra.sophos.com: 10
A / AAAA Records
- 18.230.33.170 ↩ ec2-18-230-33-170.sa-east-1.compute.amazonaws.com
Mail Server IPs
- 18.189.107.171 ↩ ec2-18-189-107-171.us-east-2.compute.amazonaws.com
- 18.118.219.4 ↩ ec2-18-118-219-4.us-east-2.compute.amazonaws.com
- 3.138.43.149 ↩ ec2-3-138-43-149.us-east-2.compute.amazonaws.com
SOA Record
Raw SOA
a.ns.cotriba.com.br postmaster.cotriba.com.br 2026012202 7200 7200 1209600 7200
Primary NS (mname)
a.ns.cotriba.com.br
Admin Email (rname)
postmaster@cotriba.com.br
Serial
2026012202
Refresh
7200s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s
Nameservers (NS)
b.ns.cotriba.com.br
a.ns.cotriba.com.br
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ip4:177.22.80.18/29 ip4:187.95.68.64/29 ip4:186.192.223.72/29 include:_spf_useast2.prod.hydra.sophos.com include:synkro.net.br include:_spf.google.com a:antispam.synkro.net.br. ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- s97vq43m5ckojadfpr067hkt9s
- facebook-domain-verification=qvhcy3trj5a89i6lg3hwf2u6tamh1f
- kv54etlo5k9uaejdgv1cgpgr51
- rb86i5m90sk4bpt7b9dojlvap0
- SPFv=spf1 mx ip4:177.22.80.18/29 ip4:187.95.68.64/29 ip4:186.192.223.72/29 include:_spf_useast2.prod.hydra.sophos.com include:synkro.net.br include:_spf.google.com a:antispam.synkro.net.br. ~all
- google-site-verification=dZbK2xxGDxknEbhLr1WKnYKOm1EFMyZtQJGjrGhOhlM
- sophos-domain-verification=6ac0dbc105da03a1ba5504aab598509d5e5a05cc
- MS=ms34460524
Full email verification for cotriba.com.br
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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