Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
singletonmarinegroup.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 19:54:38 UTC · ↺ Refresh
MX Hostnames
- mx-01-us-east-2.prod.hydra.sophos.com
- mx-02-us-east-2.prod.hydra.sophos.com
MX Priorities
- mx-02-us-east-2.prod.hydra.sophos.com: 20
- mx-01-us-east-2.prod.hydra.sophos.com: 10
A / AAAA Records
- 15.197.225.128 ↩ aec037177372cc6cd.awsglobalaccelerator.com
- 3.33.251.168 ↩ aec037177372cc6cd.awsglobalaccelerator.com
Mail Server IPs
- 3.135.48.136 ↩ ec2-3-135-48-136.us-east-2.compute.amazonaws.com
- 18.189.107.171 ↩ ec2-18-189-107-171.us-east-2.compute.amazonaws.com
- 18.118.219.4 ↩ ec2-18-118-219-4.us-east-2.compute.amazonaws.com
SOA Record
Raw SOA
ns73.domaincontrol.com dns.jomax.net 2026022203 28800 7200 604800 3600
Primary NS (mname)
ns73.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026022203
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns73.domaincontrol.com
ns74.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.prod.hydra.sophos.com include:spf.constantcontact.com include:_spf.psm.knowbe4.com ip4:12.47.172.13 ip4:12.47.172.14 include:smtp.bswift.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 include:_spf.prod.hydra.sophos.com include:spf.constantcontact.com include:_spf.psm.knowbe4.com ip4:12.47.172.13 ip4:12.47.172.14 include:smtp.bswift.com -all
- sophos-domain-verification=25336523aac2bb2299968e370a5e0d2ba6b984d4
- knowbe4-site-verification=e79c18a4683f8617ec8993b54fe5872d
- smartsheet-site-validation=O0_7qYH3wA-fHtt0Ep8ooVtMXUAANyI_
- Foxit-domain-verification=6541edf2dd43bf63425adb0fa468d905
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