Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
supco.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 03:18:10 UTC · ↺ Refresh
MX Hostnames
- supco-com.mail.protection.outlook.com
MX Priorities
- supco-com.mail.protection.outlook.com: 10
A / AAAA Records
- 66.113.188.132 (no PTR)
Mail Server IPs
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c922::1 ↩ mail-bl0pr05cu00501.inbound.protection.outlook.com
SOA Record
Raw SOA
rchdnslep01.lennoxintl.com please_set_email.absolutely.nowhere 48 3600 3600 2419200 900
Primary NS (mname)
rchdnslep01.lennoxintl.com
Admin Email (rname)
please_set_email@absolutely.nowhere
Serial
48
Refresh
3600s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
rchdnslep01.lennoxintl.com
ns1.lennoxintl.com
ns2.lennoxintl.com
dbkdnslep01.lennoxintl.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:205.145.201.253 ip4:205.145.193.7 ip4:47.19.117.10 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected];ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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- apple-domain-verification=CRDoeyQjTBqmoctQ
- MS=ms98814395
- "ppe-204c3d9298fc40e1bffe10588c435aab3e2892ee"
- SPFv=spf1 ip4:205.145.201.253 ip4:205.145.193.7 ip4:47.19.117.10 include:spf.protection.outlook.com -all
Full email verification for supco.com
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