Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sd23.bc.ca
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 02:21:59 UTC · ↺ Refresh
MX Hostnames
- sd23-bc-ca.mail.protection.outlook.com
MX Priorities
- sd23-bc-ca.mail.protection.outlook.com: 0
A / AAAA Records
- 3.99.56.206 ↩ ec2-3-99-56-206.ca-central-1.compute.amazonaws.com
Mail Server IPs
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.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
ns1.d-zone.ca ltd.sd23.bc.ca 3616407244 3600 600 2419200 300
Primary NS (mname)
ns1.d-zone.ca
Admin Email (rname)
ltd@sd23.bc.ca
Serial
3616407244
Refresh
3600s
Retry
600s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2.d-zone.ca
ns1.d-zone.ca
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:customerspf.schoolmessenger.com ip4:204.174.141.0/24 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
default._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- SPFv=spf1 include:spf.protection.outlook.com include:customerspf.schoolmessenger.com ip4:204.174.141.0/24 -all
- 1TytTRRD2gVTLu/Hnliedp73EV4VoLYUxI7wtuiaPYBKhyZBuJrM7gUts6Gww+makhqX9Sv+CatPfJLX0TyHyQ==
- apple-domain-verification=O128mI2RdwstAVn9
- MS=ms68785087
- a65671c6d3d06e7e9430c58287eee3
Full email verification for sd23.bc.ca
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