Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
st-lukes.derbyshire.sch.uk
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-14 03:47:10 UTC · ↺ Refresh
MX Hostnames
- smtp.google.com
MX Priorities
- smtp.google.com: 1
A / AAAA Records
- 195.206.186.21 (no PTR)
Mail Server IPs
- 172.253.62.26 ↩ bc-in-f26.1e100.net
- 172.253.62.27 ↩ bc-in-f27.1e100.net
- 172.253.115.27 ↩ bg-in-f27.1e100.net
- 64.233.180.26 ↩ on-in-f26.1e100.net
- 64.233.180.27 ↩ on-in-f27.1e100.net
- 2607:f8b0:4004:c21::1a ↩ pe-in-f26.1e100.net
- 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
- 2607:f8b0:4004:c07::1a ↩ bc-in-f26.1e100.net
- 2607:f8b0:4004:c07::1b ↩ bc-in-f27.1e100.net
SOA Record
Raw SOA
ns.heartinternet.uk hostmaster.mainnameserver.com 2025070758 10800 600 2419200 3600
Primary NS (mname)
ns.heartinternet.uk
Admin Email (rname)
hostmaster@mainnameserver.com
Serial
2025070758
Refresh
10800s
Retry
600s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
ns.heartinternet.uk
ns2.heartinternet.uk
SPF Record
✓ Strict (-all)
v=spf1 mx a:mail3.itjustdone.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; adkim=r; aspf=r; sp=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
⚠ Public key (p=) missing in DKIM record for selector google.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx a:mail3.itjustdone.com -all
- google-site-verification=gTz5WBexcRCqQ3ADF-CRLFRMh-M3uB1ZqWdRQ33v2c0
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