Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cartesiangroup.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 13:49:14 UTC · ↺ Refresh
MX Hostnames
- mail.constructuretech.com
MX Priorities
- mail.constructuretech.com: 10
A / AAAA Records
- 34.174.22.251 ↩ 251.22.174.34.bc.googleusercontent.com
Mail Server IPs
- 65.254.27.154 ↩ mail.constructuretech.com
- 167.206.68.253 ↩ mail.constructuretech.com
SOA Record
Raw SOA
ns1.siteground.net dnsadmin.us41.siteground.us 2020052290 86400 7200 3600000 86400
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
dnsadmin@us41.siteground.us
Serial
2020052290
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns2.siteground.net
ns1.siteground.net
SPF Record
✓ Strict (-all)
v=spf1 +a +mx +ip4:34.174.43.76 include:mail.spamprotection.com include:spf.protection.outlook.com include:spfhost.messageprovider.com a:mail.constructuretech.com include:cartesiangroup.com.spf.auto.dnssmarthost.net -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:cartesiancapitalgroup.onmicrosoft.com
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:cartesiancapitalgroup.onmicrosoft.com
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- dropbox-domain-verification=kq8xkpztqw5b
- MS=ms66196488
- google-site-verification=x-QHxPrpy98QPcV2ceYfkijKTi1hTWzZLPJb8JH595k
- i=173&m=geo-g3-mx2-p8
- SPFv=spf1 +a +mx +ip4:34.174.43.76 include:mail.spamprotection.com include:spf.protection.outlook.com include:spfhost.messageprovider.com a:mail.constructuretech.com include:cartesiangroup.com.spf.auto.dnssmarthost.net -all
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