concoronline.com

Valid Email Server
Domain Lookup › concoronline.com

Domain Overview

DNS: ✓ 4h ago Checker: ✓ 4h ago
concoronline.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 03:40:46 UTC · ↺ Refresh

MX Hostnames

  • concoronline-com.inbound.emailservice.cc
  • concoronline-com.inbound.emailservice.co
  • concoronline-com.inbound.emailservice.io

MX Priorities

  • concoronline-com.inbound.emailservice.cc: 20
  • concoronline-com.inbound.emailservice.co: 30
  • concoronline-com.inbound.emailservice.io: 10

A / AAAA Records

  • 75.2.60.5 ↩ acd89244c803f7181.awsglobalaccelerator.com

Mail Server IPs

  • 107.21.241.201 ↩ ec2-107-21-241-201.compute-1.amazonaws.com
  • 52.44.33.109 ↩ ec2-52-44-33-109.compute-1.amazonaws.com
  • 54.211.15.143 ↩ ec2-54-211-15-143.compute-1.amazonaws.com

SOA Record

Raw SOA ns75.domaincontrol.com dns.jomax.net 2025032605 28800 7200 604800 600
Primary NS (mname)
ns75.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025032605
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns76.domaincontrol.com
ns75.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:newsletter.coffeecup.com include:spf.us.emailservice.io -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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

2 records
  • MS=ms15724808
  • SPFv=spf1 include:spf.protection.outlook.com include:newsletter.coffeecup.com include:spf.us.emailservice.io -all
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