mrsc.com

Valid Email Server
Domain Lookup › mrsc.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
mrsc.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-19 07:59:21 UTC · ↺ Refresh

MX Hostnames

  • us-smtp-inbound-2.mimecast.com
  • us-smtp-inbound-1.mimecast.com

MX Priorities

  • us-smtp-inbound-2.mimecast.com: 10
  • us-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 151.101.2.159 (no PTR)

Mail Server IPs

  • 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
  • 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
  • 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com

SOA Record

Raw SOA ns55.worldnic.com namehost.worldnic.com 125072815 10800 3600 604800 3600
Primary NS (mname)
ns55.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125072815
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns56.worldnic.com
ns55.worldnic.com

SPF Record

✓ Strict (-all)
v=spf1 include:_netblocks.mimecast.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict 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

3 records
  • 0ed1fe018ac13c3bdcedcb495993362ea653ad3c2e
  • MS=ms49105499
  • SPFv=spf1 include:_netblocks.mimecast.com include:spf.protection.outlook.com -all
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