Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zaconstruction.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 23:38:59 UTC · ↺ Refresh
MX Hostnames
- d299143b.ess.barracudanetworks.com
- d299143a.ess.barracudanetworks.com
MX Priorities
- d299143b.ess.barracudanetworks.com: 20
- d299143a.ess.barracudanetworks.com: 10
A / AAAA Records
- 192.124.249.33 ↩ cloudproxy10033.sucuri.net
Mail Server IPs
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
- 209.222.82.253 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:20.64.233.169 include:sendgrid.net include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
4 records- mscid=TyCqVb/7RlxyFLTqk9dcpEjnM+Niqmg4TwV2wnO7+Ye3nypHAv8sG0uIcoutddBv+PF6/nsYqadEa2ha6E+w+Q==
- SPFv=spf1 ip4:20.64.233.169 include:sendgrid.net include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com -all
- "MS=ms43541539"
- b9k011k238fncgeofh0lvf0im4
Full email verification for zaconstruction.com
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