rtib.net

Valid Email Server
Domain Lookup › rtib.net

Domain Overview

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

Checked via [email protected] · 2026-03-19 08:44:43 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

  • 99.83.176.46 ↩ a44fc39dcd01d2028.awsglobalaccelerator.com

Mail Server IPs

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

SOA Record

Raw SOA ha1.markmonitor.zone hostmaster.markmonitor.com 2025122901 7200 900 1209600 172800
Primary NS (mname)
ha1.markmonitor.zone
Admin Email (rname)
hostmaster@markmonitor.com
Serial
2025122901
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
172800s

Nameservers (NS)

ha4.markmonitor.zone
ha1.markmonitor.zone
ha2.markmonitor.zone
ha3.markmonitor.zone

SPF Record

✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com include:et._spf.pardot.com include:servers.mcsv.net include:spf_c.oracle.com include:spf_a.oracle.com include:_spf.dayforcehcm.com a:spf.nexsure.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; aspf=s; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject

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
  • MS=ms26929413
  • 0ed1fe018af07ce58c831342409b917776d802a5f1
  • SPFv=spf1 include:us._netblocks.mimecast.com include:et._spf.pardot.com include:servers.mcsv.net include:spf_c.oracle.com include:spf_a.oracle.com include:_spf.dayforcehcm.com a:spf.nexsure.com -all
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