Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
constructorasanjose.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 01:46:02 UTC · ↺ Refresh
MX Hostnames
- smtp2.grupo-sanjose.com
- smtp.grupo-sanjose.com
- smtp3.grupo-sanjose.com
- smtp4.grupo-sanjose.com
MX Priorities
- smtp4.grupo-sanjose.com: 50
- smtp.grupo-sanjose.com: 10
- smtp3.grupo-sanjose.com: 5
- smtp2.grupo-sanjose.com: 20
A / AAAA Records
- 178.255.225.207 (no PTR)
Mail Server IPs
- 90.161.4.77 ↩ smtp4.grupo-sanjose.com
- 213.0.8.200 ↩ smtp.grupo-sanjose.com
- 90.161.69.200 ↩ smtp3.grupo-sanjose.com
- 77.230.169.77 ↩ smtp2.grupo-sanjose.com
SOA Record
Raw SOA
dns5.servidoresdns.net hostmaster.servidoresdns.net 2005072775 21600 3600 2419200 86400
Primary NS (mname)
dns5.servidoresdns.net
Admin Email (rname)
hostmaster@servidoresdns.net
Serial
2005072775
Refresh
21600s
Retry
3600s
Expire
2419200s
Minimum TTL
86400s
Nameservers (NS)
dns6.servidoresdns.net
dns5.servidoresdns.net
SPF Record
✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx -all
- MS=ms53517502
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