Domain Overview
DNS: ✓ 3d ago
Checker: ✓ 3d ago
ccdc.cam.ac.uk
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-18 06:17:13 UTC · ↺ Refresh
MX Hostnames
- d218497.a.ess.uk.barracudanetworks.com
- d218497.b.ess.uk.barracudanetworks.com
MX Priorities
- d218497.a.ess.uk.barracudanetworks.com: 2
- d218497.b.ess.uk.barracudanetworks.com: 8
A / AAAA Records
- 13.107.213.40 (no PTR)
- 13.107.246.40 (no PTR)
Mail Server IPs
- 18.133.136.188 ↩ mail.ess.uk.barracuda.com
- 18.133.136.186 ↩ mail.ess.uk.barracuda.com
- 18.133.136.187 ↩ mail.ess.uk.barracuda.com
SOA Record
Raw SOA
ns1-37.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-37.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns3-37.azure-dns.org
ns4-37.azure-dns.info
ns1-37.azure-dns.com
ns2-37.azure-dns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:131.111.113.8 include:5700241.spf05.hubspotemail.net include:_spf.atlassian.net include:sendgrid.net include:fdspfeuc.freshemail.io -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- atlassian-domain-verification=HrS8zrRiDHdM14If4T6nSnQacOtaAexTPA7xIQ3OGf3aCIOWHcMa6AaIDO9ZgUTt
- access-domain-verification=64f5832c78d51a48d28fad12a4008c2614d3a412acac40eaa68c3594c242cae2
- msfpkey=55sgrlr55bes3gf0szur48frl
- google-site-verification=kPrJpWlfhwAjZf0Lc5k4A_SYaXgb3Bcr9HbFFgEGtck
- apple-domain-verification=k4IXwI0v6mZr1uHY
- atlassian-sending-domain-verification=305df266-7741-4649-8f0d-4742892d5e95
- google-site-verification=dAMnGaM-fG-wTn3EAuJvrNBvpHjI8EgK4PkRCCPbiKI
- google-site-verification=Tq6Khmn8e_x25Cl5JBqCDMd7iNS4mkCXu4-9sMAk0hs
- Foxit-domain-verification=18c5cd3466713033a38cb94a600b7d38
- google-site-verification=4gdXUtTiRpRC8vxTqsOi-OPjQM8UmOryTY3chqyGjZ4
- miro-verification=6dbeb684b8ac73d09aee21d5387d7d6dba86b0fd
- SPFv=spf1 include:spf.protection.outlook.com ip4:131.111.113.8 include:5700241.spf05.hubspotemail.net include:_spf.atlassian.net include:sendgrid.net include:fdspfeuc.freshemail.io -all
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