Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
classicplumb.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 19:10:32 UTC · ↺ Refresh
MX Hostnames
- classicplumb-com.mail.protection.outlook.com
MX Priorities
- classicplumb-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.89.254 (no PTR)
- 172.67.150.126 (no PTR)
- 2606:4700:3035::6815:59fe
- 2606:4700:3035::ac43:967e
Mail Server IPs
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.194.15 ↩ mail-ch4pr21cu00107.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
hans.ns.cloudflare.com dns.cloudflare.com 2399925574 10000 2400 604800 1800
Primary NS (mname)
hans.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399925574
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
kim.ns.cloudflare.com
hans.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a mx include:spf.protection.outlook.com include:_spf.accuraty.com include:_spf.sparkpostmail.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected],mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- google-site-verification=8QgPtLWziwJdbSL4GrpxOcD9gPVZwgBcCPDr6zgCWF4
- SPFv=spf1 a mx include:spf.protection.outlook.com include:_spf.accuraty.com include:_spf.sparkpostmail.com -all
Full email verification for classicplumb.com
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