Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
theconcreteexperts.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 18:15:39 UTC · ↺ Refresh
MX Hostnames
- d319089a.ess.barracudanetworks.com
- d319089b.ess.barracudanetworks.com
MX Priorities
- d319089a.ess.barracudanetworks.com: 10
- d319089b.ess.barracudanetworks.com: 20
A / AAAA Records
- 34.174.203.151 ↩ 151.203.174.34.bc.googleusercontent.com
Mail Server IPs
- 209.222.82.253 ↩ mail.ess.barracuda.com
- 209.222.82.252 ↩ mail.ess.barracuda.com
- 209.222.82.255 ↩ mail.ess.barracuda.com
SOA Record
Raw SOA
ns1.siteground.net admins.siteground.com 205 86400 7200 3600000 86400
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
admins@siteground.com
Serial
205
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns2.siteground.net
ns1.siteground.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:theconcreteexperts.com.spf.auto.dnssmarthost.net include:ess.barracudanetworks.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; aspf=r; adkim=r;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms12123193
- SPFv=spf1 include:spf.protection.outlook.com include:theconcreteexperts.com.spf.auto.dnssmarthost.net include:ess.barracudanetworks.com -all
- knowbe4-site-verification=e7573d79d8566149371eb5ed035927c9
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