costulessins.com

Valid Email Server
Domain Lookup › costulessins.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
costulessins.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-01 07:47:50 UTC · ↺ Refresh

MX Hostnames

  • mailhost.costulessins.com
  • us-smtp-inbound-2.mimecast.com
  • us-smtp-inbound-1.mimecast.com
  • mailhost2.costulessins.com

MX Priorities

  • mailhost.costulessins.com: 30
  • mailhost2.costulessins.com: 40
  • us-smtp-inbound-1.mimecast.com: 10
  • us-smtp-inbound-2.mimecast.com: 20

A / AAAA Records

  • 75.2.79.209 ↩ ac860de7865e074c0.awsglobalaccelerator.com

Mail Server IPs

  • 64.93.77.11 (no PTR)
  • 65.60.75.38 ↩ 65-60-75-38.static-ip.telepacific.net
  • 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com

SOA Record

Raw SOA pdns11.domaincontrol.com dns.jomax.net 2025010600 28800 7200 604800 600
Primary NS (mname)
pdns11.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025010600
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

pdns12.domaincontrol.com
pdns11.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:69.71.56.27 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.freewayinsurance.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; pct=100; rf=afrf
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

7 records
  • 4lkme6t5mch5rhfae1kpkr72k1
  • google-site-verification=MVvQcGAEDAwt7s6ebdGmu4D57D4RLzfj0hQN5oPNoQY
  • dropbox-domain-verification=9mkeqvsrzrwx
  • SPFv=spf1 ip4:69.71.56.27 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.freewayinsurance.com -all
  • fuZn2hrbmDA458oYHKlBB2n+3pZwpAGTTBuaAk3nVXd7NUNN80FS64rcXqd30aV0QDxfI7TnpT80/ob6TnWjpg==
  • hj7minmd72q9pdka85jdvq8cik
  • MS=ms90737071
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