Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
rpclondon.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 15:12:44 UTC · ↺ Refresh
MX Hostnames
- mail.rpclondon.com
- mailcluster.zen.co.uk
MX Priorities
- mailcluster.zen.co.uk: 20
- mail.rpclondon.com: 10
A / AAAA Records
- 82.71.204.27 ↩ cp17.hosting.zen.net.uk
Mail Server IPs
- 212.23.3.121 ↩ bastion02.mail.zen.net.uk
- 212.23.6.67 ↩ bastion04.mail.zen.net.uk
- 82.71.204.27 ↩ cp17.hosting.zen.net.uk
SOA Record
Raw SOA
ns0.zen.co.uk netman.zen.co.uk 2023063005 1200 3600 604800 86400
Primary NS (mname)
ns0.zen.co.uk
Admin Email (rname)
netman@zen.co.uk
Serial
2023063005
Refresh
1200s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns0.zen.co.uk
ns1.zen.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 +mx +a +ip4:82.71.204.27 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 3 found
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +mx +a +ip4:82.71.204.27 ~all
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