Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tomharris.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 08:54:39 UTC · ↺ Refresh
MX Hostnames
- tomharris-com.mail.protection.outlook.com
MX Priorities
- tomharris-com.mail.protection.outlook.com: 0
A / AAAA Records
- 209.59.168.176 (no PTR)
Mail Server IPs
- 52.101.190.2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
- 52.101.192.0 ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c944:: ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
- 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
- 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
- 2a01:111:f403:c942::1 ↩ mail-yt3pr01cu00701.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:173.180.44.201 ip4:3.97.106.14 ip4:168.245.59.100 ip4:4.239.240.241 include:spf.protection.outlook.com include:sendgrid.net include:emsd1.com include:spfc0.megamailservers.com include:mail.zendesk.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; sp=reject; adkim=s; aspf=s; rf=afrf; ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- mscid=GNmkv7UQuo3Y4FazJSOK2+qjBktqaQl1yvt338aICJatVCwA5RBO/rRuZvVKjxA3kf02AF49xblFxU0GD16nQQ==
- apple-domain-verification=cpl2h8woMoyz4tKpUogQir9IPI9K-NF6XU9PWOJM-QY
- SPFv=spf1 mx ip4:173.180.44.201 ip4:3.97.106.14 ip4:168.245.59.100 ip4:4.239.240.241 include:spf.protection.outlook.com include:sendgrid.net include:emsd1.com include:spfc0.megamailservers.com include:mail.zendesk.com -all
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