Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
derrflooring.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 04:27:32 UTC · ↺ Refresh
MX Hostnames
- derrflooring-com.mail.protection.outlook.com
MX Priorities
- derrflooring-com.mail.protection.outlook.com: 10
A / AAAA Records
- 174.138.86.100 ↩ posture6.posturedns.com
Mail Server IPs
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 2a01:111:f403:c92c::1 ↩ mail-dm6pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-1667.awsdns-16.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1667.awsdns-16.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1667.awsdns-16.co.uk
ns-236.awsdns-29.com
ns-655.awsdns-17.net
ns-1331.awsdns-38.org
SPF Record
✓ Strict (-all)
v=spf1 a:derrflooring.com ip4:216.17.79.196 include:servers.mcsv.net include:spf.us.exclaimer.net include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected],mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
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
3 records- google-site-verification=wscPdHdVuM-50qBmOAor6_gxMDlHB3yn8RjwoSkUyYc
- SPFv=spf1 a:derrflooring.com ip4:216.17.79.196 include:servers.mcsv.net include:spf.us.exclaimer.net include:spf.protection.outlook.com -all
- 9goaqcua9pt334dckbg4015m98
Full email verification for derrflooring.com
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