Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rtlplumbing.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 15:21:05 UTC · ↺ Refresh
MX Hostnames
- mx.stackmail.com
MX Priorities
- mx.stackmail.com: 10
A / AAAA Records
- 185.151.30.158 ↩ 185-151-30-158.ptr4.stackcp.net
- 2a07:7800::158 (no PTR)
Mail Server IPs
- 185.151.28.67 ↩ mx.stackmail.com
SOA Record
Raw SOA
ns1.outrank.uk hostmaster.stackdns.com 1761829532 1800 900 1209600 300
Primary NS (mname)
ns1.outrank.uk
Admin Email (rname)
hostmaster@stackdns.com
Serial
1761829532
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns1.outrank.uk
ns2.outrank.uk
ns4.outrank.uk
ns3.outrank.uk
SPF Record
✗ MissingNo SPF record — domain is unprotected against spoofing.
⚠ No SPF record found. Email servers cannot verify authorized senders.
DMARC Record
✗ p=none
v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;rf=afrf;ri=86400
⚠ p=none — monitoring only, no enforcement
📋 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
No TXT records found.
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