Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
justinternetsolutions.co.uk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 02:24:20 UTC · ↺ Refresh
MX Hostnames
- mx1.emailsrvr.com
- mx2.emailsrvr.com
MX Priorities
- mx1.emailsrvr.com: 10
- mx2.emailsrvr.com: 20
A / AAAA Records
- 185.151.30.139 ↩ 185-151-30-139.ptr4.stackcp.net
- 2a07:7800::139 (no PTR)
Mail Server IPs
- 173.203.187.1 ↩ mx1.emailsrvr.com
- 184.106.54.2 ↩ mx2.emailsrvr.com
- 108.166.43.2 ↩ mx2.emailsrvr.com
- 146.20.161.2 ↩ mx2.emailsrvr.com
- 173.203.187.2 ↩ mx2.emailsrvr.com
SOA Record
Raw SOA
ns1.stackdns.com hostmaster.stackdns.com 1770205985 1800 900 1209600 300
Primary NS (mname)
ns1.stackdns.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1770205985
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns1.stackdns.com
ns4.stackdns.com
ns2.stackdns.com
ns3.stackdns.com
SPF Record
✓ Strict (-all)
v=spf1 include:emailsrvr.com include:sendgrid.net ip4:159.183.181.19 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._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:emailsrvr.com include:sendgrid.net ip4:159.183.181.19 -all
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