Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
collinscc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 06:42:40 UTC · ↺ Refresh
MX Hostnames
- collinscc-com.mail.protection.outlook.com
MX Priorities
- collinscc-com.mail.protection.outlook.com: 0
A / AAAA Records
- 198.185.159.145 (no PTR)
- 198.49.23.144 (no PTR)
- 198.185.159.144
- 198.49.23.145
Mail Server IPs
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.sentree.io hostmaster.sentree.io 2008010117 43200 3600 1209600 180
Primary NS (mname)
ns1.sentree.io
Admin Email (rname)
hostmaster@sentree.io
Serial
2008010117
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns1.sentree.io
ns2.sentree.io
ns4.sentree.io
ns3.sentree.io
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:69.244.225.46 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=UsD-5j-pgjrDxb7rAcgJtjIwM5ldDakeE7Uvhu_BmaE
- v=verifydomain MS=4310599
- apple-domain-verification=exRsEOf64h54N89O
- SPFv=spf1 include:spf.protection.outlook.com ip4:69.244.225.46 -all
Full email verification for collinscc.com
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