marking.ca

Valid Email Server
Domain Lookup › marking.ca

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
marking.ca
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-27 20:35:46 UTC · ↺ Refresh

MX Hostnames

  • sterling-ca.mail.protection.outlook.com

MX Priorities

  • sterling-ca.mail.protection.outlook.com: 10

A / AAAA Records

  • 72.142.69.84 ↩ unallocated-static.rogers.com
  • 209.226.69.84 (no PTR)

Mail Server IPs

  • 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
  • 52.101.190.1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
  • 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
  • 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
  • 2a01:111:f403:c942::1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
  • 2a01:111:f403:c944:: ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
  • 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
  • 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com

SOA Record

Raw SOA dnsg1.sterling.ca techsupport.sterling.ca 2026032702 14400 900 1209600 3600
Primary NS (mname)
dnsg1.sterling.ca
Admin Email (rname)
techsupport@sterling.ca
Serial
2026032702
Refresh
14400s
Retry
900s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

dnsg1.sterling.ca
dnsg2.sterling.ca

SPF Record

✓ Soft Fail (~all)
v=spf1 mx a ip4:72.142.76.186/30 ip4:209.226.69.66/26 ip4:72.142.69.66/26 include:servers.mcsv.net include:spf.protection.outlook.com
📊 DNS lookups: 4/10

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
  • SPFv=spf1 mx a ip4:72.142.76.186/30 ip4:209.226.69.66/26 ip4:72.142.69.66/26 include:servers.mcsv.net include:spf.protection.outlook.com
  • rq7jrdr33sx4hhr4fhhwgl0dgwsyd81t
  • MS=ms44289515
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