Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fs.co.uk
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 16:46:02 UTC · ↺ Refresh
MX Hostnames
- d217786.a.ess.uk.barracudanetworks.com
- d217786.b.ess.uk.barracudanetworks.com
MX Priorities
- d217786.b.ess.uk.barracudanetworks.com: 20
- d217786.a.ess.uk.barracudanetworks.com: 10
A / AAAA Records
- 77.72.2.48 ↩ agathon-lon.krystal.uk
Mail Server IPs
- 18.133.136.186 ↩ mail.ess.uk.barracuda.com
- 18.133.136.188 ↩ mail.ess.uk.barracuda.com
- 18.133.136.187 ↩ mail.ess.uk.barracuda.com
SOA Record
Raw SOA
ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-03.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-03.azure-dns.info
ns1-03.azure-dns.com
ns2-03.azure-dns.net
ns3-03.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:spf.ess.uk.barracudanetworks.com include:_spf.eu.mailgun.org include:_spf.salesforce.com include:emaileuc.freshservice.com include:spf.uk.exclaimer.net include:spf2.accessacloud.com ip4:86.188.246.40 ip4:52.16.15.54/32 ip4:52.30.248.83/32 -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],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
9 records- include:emailmum.freshservice.com ~all
- BPL=7826244
- atlassian-domain-verification=JoYOrJR5MSEZ/LReFKE8Tse9rgdHf3V6Pz4B0RJ6wMNjOp6aBbk1axYoa8xGLupz
- ms-domain-verification=77980310-17d3-4696-b35b-6ba7e28e0d75
- bw=BNg8ko1aLM8VzNk0EUO1LQRXZBmFpHCx0p23Sfj5t3kE
- ms-domain-verification=5b70c88d-19dc-4766-9efa-568ade75903c
- anthropic-domain-verification-se8j6d=Aq6wpp0XbHTg4oBmXiTdjWGeH
- SPFv=spf1 mx include:spf.protection.outlook.com include:spf.ess.uk.barracudanetworks.com include:_spf.eu.mailgun.org include:_spf.salesforce.com include:emaileuc.freshservice.com include:spf.uk.exclaimer.net include:spf2.accessacloud.com ip4:86.188.246.40 ip4:52.16.15.54/32 ip4:52.30.248.83/32 -all
- 7vjKLtEmo4fz8dLFnJOZcT/LMKaR8iwjU3vs7ylpEKCqqXCbi0G7Fl1A0Z3F8dvFlb2Wwmh8SU//fFgfKjgdZQ==
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