Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jbinstallationsnw.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 22:05:41 UTC · ↺ Refresh
MX Hostnames
- mx1.123-reg.co.uk
- mx0.123-reg.co.uk
MX Priorities
- mx0.123-reg.co.uk: 20
- mx1.123-reg.co.uk: 10
A / AAAA Records
- 185.151.30.166 ↩ 185-151-30-166.ptr4.stackcp.net
- 2a07:7800::166 (no PTR)
Mail Server IPs
- 216.69.141.84 ↩ osplibsmtp02-v01.prod.phx3.secureserver.net
- 216.69.141.71 ↩ osplibsmtp01-v01.prod.phx3.secureserver.net
- 216.69.141.113 ↩ osplibsmtp03-v01.prod.phx3.secureserver.net
- 216.69.141.114 ↩ osplibsmtp03-v02.prod.phx3.secureserver.net
- 216.69.141.78 ↩ osplibsmtp01-v02.prod.phx3.secureserver.net
- 216.69.141.162 ↩ osplibsmtp02-v02.prod.phx3.secureserver.net
SOA Record
Raw SOA
ns1.outrank.uk hostmaster.stackdns.com 1723544003 1800 900 1209600 300
Primary NS (mname)
ns1.outrank.uk
Admin Email (rname)
hostmaster@stackdns.com
Serial
1723544003
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns1.outrank.uk
ns2.outrank.uk
ns3.outrank.uk
ns4.outrank.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spf.stackmail.com a mx ip4:94.136.40.163 a:mailex.mailcore.me -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;sp=none;adkim=r;aspf=r;pct=100;rf=afrf;ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 include:spf.stackmail.com a mx ip4:94.136.40.163 a:mailex.mailcore.me -all
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