Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
knoxschools.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 14:59:05 UTC · ↺ Refresh
MX Hostnames
- knoxschools-org.mail.eo.outlook.com
MX Priorities
- knoxschools-org.mail.eo.outlook.com: 0
A / AAAA Records
- 104.17.71.73 (no PTR)
Mail Server IPs
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.9.0 ↩ mail-bl2pr02cu00100.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
SOA Record
Raw SOA
dns101.register.com root.register.com 126030413 10800 3600 604800 3600
Primary NS (mname)
dns101.register.com
Admin Email (rname)
root@register.com
Serial
126030413
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns102.register.com
dns101.register.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf1.knoxschools.org ip4:96.4.111.55 ip4:96.4.107.90 ip4:96.4.105.250 ip4:65.52.203.239 include:customerspf.schoolmessenger.com include:sendgrid.net -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- openai-domain-verification=dv-8mCet5n8QmeganwGpjAdwwze
- apple-domain-verification=JGIl8AeJe1OHrtD9
- ZOOM_verify_Zd45s7BCTmufWYnirNZVaQ
- google-site-verification=gT9e59xr_oHqmR6LClyco0WCr4zwvBwI0WrYtm_rbxM
- smartsheet-site-validation=jc7Y0dRNhf73a8tT0EDXpf2qMT0-po08
- SPFv=spf1 include:spf.protection.outlook.com include:spf1.knoxschools.org ip4:96.4.111.55 ip4:96.4.107.90 ip4:96.4.105.250 ip4:65.52.203.239 include:customerspf.schoolmessenger.com include:sendgrid.net -all
- anthropic-domain-verification-kww4pe=YjeA0MQ2zMf4dgE71q67byLBt
- google-site-verification=YCDsTU4I1_0sQivrPVxjbgFgDmCzut1TM2FdpRDDph4
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