Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
heroldengineering.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 13:21:52 UTC · ↺ Refresh
MX Hostnames
- heroldengineering-com.inbound.emailservice.cc
- heroldengineering-com.inbound.emailservice.co
- heroldengineering-com.inbound.emailservice.io
MX Priorities
- heroldengineering-com.inbound.emailservice.cc: 20
- heroldengineering-com.inbound.emailservice.co: 30
- heroldengineering-com.inbound.emailservice.io: 10
A / AAAA Records
- 71.19.241.30 ↩ yvr26.v3media.ca
Mail Server IPs
- 52.44.33.109 ↩ ec2-52-44-33-109.compute-1.amazonaws.com
- 107.21.241.201 ↩ ec2-107-21-241-201.compute-1.amazonaws.com
- 54.211.15.143 ↩ ec2-54-211-15-143.compute-1.amazonaws.com
SOA Record
Raw SOA
ns-574.awsdns-07.net awsdns-hostmaster.amazon.com 2022080901 7200 900 1209600 86400
Primary NS (mname)
ns-574.awsdns-07.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
2022080901
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.heroldengineering.com
ns2.heroldengineering.com
ns3.heroldengineering.com
ns4.heroldengineering.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:184.69.121.178 ip4:184.69.121.182 include:spf.us.emailservice.io include:spf.protection.outlook.com include:spf-ca.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- cpoj974rl75da4jm9f41t7p26g
- facebook-domain-verification=r993ztbtjvrx6r330r3enxydst8s6d
- google-site-verification=L5X-tVg_h-XcpK48cGETgXInICYVUe_cATW4qT_TWhA
- openai-domain-verification=dv-AIbYfEYwPF3kEVprZbxk1FgX
- SPFv=spf1 ip4:184.69.121.178 ip4:184.69.121.182 include:spf.us.emailservice.io include:spf.protection.outlook.com include:spf-ca.emailsignatures365.com -all
- 0304506aff1cb6ab76b570eadefcbc201ef422db42d5220f7d
- 3emkf31ktg9qo5apqoogct8dit
- MS=725A051C0466F9CC463BE39C5BBAC93C4E20ACB6
- apple-domain-verification=yxTztn9hAu6NConR
- autodesk-domain-verification=ZPwVXFncnDRRZjS5kCR6
- bluebeam-verification=jwdb89wu1t518nl28dr97kz05kf2qy
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