Domain Overview
DNS: ✓ 17h ago
Checker: ✓ 17h ago
penso.co.uk
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-20 15:57:16 UTC · ↺ Refresh
MX Hostnames
- d223137.a.ess.uk.barracudanetworks.com
- d223137.b.ess.uk.barracudanetworks.com
MX Priorities
- d223137.b.ess.uk.barracudanetworks.com: 15
- d223137.a.ess.uk.barracudanetworks.com: 5
A / AAAA Records
- 185.151.30.179 ↩ 185-151-30-179.ptr4.stackcp.net
- 2a07:7800::179 (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.stackdns.com hostmaster.stackdns.com 1755877165 1800 900 1209600 300
Primary NS (mname)
ns1.stackdns.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1755877165
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns3.stackdns.com
ns1.stackdns.com
ns2.stackdns.com
ns4.stackdns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mandrillapp.com include:_spf.salesforce.com include:spf.protection.outlook.com include:spf.penso.co.uk include:spf.cipher-it.co.uk -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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- RmWfr67
- SPFv=spf1 include:spf.mandrillapp.com include:_spf.salesforce.com include:spf.protection.outlook.com include:spf.penso.co.uk include:spf.cipher-it.co.uk -all
- google-site-verification=O-xFgsyVq8fmgYoSGar_pJVoAMegmchfIlihT6urCRI
- rcj00f8mvi83c3qe81q6fgmlq9
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