Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
collaborativestructures.com
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 17:37:48 UTC · ↺ Refresh
MX Hostnames
- d403366.b.ess.ca.barracudanetworks.com
- d403366.a.ess.ca.barracudanetworks.com
MX Priorities
- d403366.a.ess.ca.barracudanetworks.com: 10
- d403366.b.ess.ca.barracudanetworks.com: 20
A / AAAA Records
- 35.209.150.36 ↩ 36.150.209.35.bc.googleusercontent.com
Mail Server IPs
- 15.222.16.211 ↩ mail.ess.ca.barracuda.com
- 15.222.16.209 ↩ mail.ess.ca.barracuda.com
- 15.222.16.210 ↩ mail.ess.ca.barracuda.com
SOA Record
Raw SOA
ns1.siteground.net admins.siteground.com 156 86400 7200 3600000 86400
Primary NS (mname)
ns1.siteground.net
Admin Email (rname)
admins@siteground.com
Serial
156
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.siteground.net
ns2.siteground.net
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:spf.ess.ca.barracudanetworks.com include:collaborativestructures.com.spf.auto.dnssmarthost.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
4 records- 258314
- sophos-domain-verification=0855a8fad5dc76705cf9fcb6299d41a7f8bce3bc36e4c4da017f922c7c99a5a8
- SPFv=spf1 mx include:spf.protection.outlook.com include:spf.ess.ca.barracudanetworks.com include:collaborativestructures.com.spf.auto.dnssmarthost.net -all
- google-site-verification=v3GpBECnndEeClD2YeUhksa21GWjerpO6_s77PebrCc
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