Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jbuild.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 16:22:39 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 20
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
pdns09.domaincontrol.com dns.jomax.net 2025112923 28800 7200 604800 600
Primary NS (mname)
pdns09.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025112923
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
pdns10.domaincontrol.com
pdns09.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:spf.zohomail360.com ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.0.0/16 ip4:13.93.220.120 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
~ 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
7 records- apple-domain-verification=dPBb1yI7ZHHvvNXl
- sophos-domain-verification=7c6a204b20a38073c4e656a716b3b0eba6794c81150c7bbf5e42675474327c21
- 0ed1fe018a0bf7af93c71d471aac9f4de311ef7d51
- ZOOM_verify_e-aG4YNlTaS8Un-Y2w9JRg
- UZ5rTUUqeowPxD1SsJOz5a4PEpPPPAPqxayC2R2OVBS4aHQ961mr5D/8P3EOZt9d0knYOfxmOGUJzZhCRcvmNw==
- knowbe4-site-verification=98c41d6a7b67529d36f0f07d8cfd5441
- SPFv=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:spf.zohomail360.com ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.0.0/16 ip4:13.93.220.120 -all
Full email verification for jbuild.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits