Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jfrbuilders.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 02:09:55 UTC · ↺ Refresh
MX Hostnames
- jfrbuilders-com.mail.protection.outlook.com
MX Priorities
- jfrbuilders-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.62.134 (no PTR)
- 172.67.136.45 (no PTR)
- 2606:4700:3035::6815:3e86
- 2606:4700:3033::ac43:882d
Mail Server IPs
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
byron.ns.cloudflare.com dns.cloudflare.com 2397960692 10000 2400 604800 1800
Primary NS (mname)
byron.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397960692
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
magdalena.ns.cloudflare.com
byron.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a ip4:199.244.76.0/24 include:spf.dcsny.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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
2 records- MS=ms71305794
- SPFv=spf1 a ip4:199.244.76.0/24 include:spf.dcsny.com include:spf.protection.outlook.com ~all
Full email verification for jfrbuilders.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits