Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cold-heat.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 07:19:36 UTC · ↺ Refresh
MX Hostnames
- mx.stackmail.com
MX Priorities
- mx.stackmail.com: 10
A / AAAA Records
- 185.151.30.165 ↩ 185-151-30-165.ptr4.stackcp.net
- 2a07:7800::165 (no PTR)
Mail Server IPs
- 185.151.28.67 ↩ mx.stackmail.com
SOA Record
Raw SOA
ns1.stackdns.com hostmaster.stackdns.com 1707922110 1800 900 1209600 300
Primary NS (mname)
ns1.stackdns.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1707922110
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns3.stackdns.com
ns4.stackdns.com
ns2.stackdns.com
ns1.stackdns.com
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; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- brevo-code:967bd33bc78556a0ea784c2e302f621b
- google-site-verification=uuXlkT9CdYx0mxCT2fnDBu_nqW6fsJ3dNB1emLPBCGg
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