mastercone.com

Valid Email Server
Domain Lookup › mastercone.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mastercone.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-19 02:00:40 UTC · ↺ Refresh

MX Hostnames

  • mx1.emailsrvr.com
  • mx2.emailsrvr.com

MX Priorities

  • mx2.emailsrvr.com: 20
  • mx1.emailsrvr.com: 10

A / AAAA Records

  • 104.21.60.35 (no PTR)
  • 172.67.191.33 (no PTR)
  • 2606:4700:3032::ac43:bf21 (no PTR)
  • 2606:4700:3037::6815:3c23 (no PTR)

Mail Server IPs

  • 184.106.54.2 ↩ mx2.emailsrvr.com
  • 146.20.161.1 ↩ mx1.emailsrvr.com
  • 173.203.187.1 ↩ mx1.emailsrvr.com
  • 184.106.54.1 ↩ mx1.emailsrvr.com
  • 108.166.43.1 ↩ mx1.emailsrvr.com

SOA Record

Raw SOA eric.ns.cloudflare.com dns.cloudflare.com 2399282819 10000 2400 604800 1800
Primary NS (mname)
eric.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399282819
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

eric.ns.cloudflare.com
pam.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:emailsrvr.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✗ None detected

No 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

1 record
  • SPFv=spf1 include:emailsrvr.com ~all
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