Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
jbb.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-18 15:43:30 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 0
- us-smtp-inbound-2.mimecast.com: 0
A / AAAA Records
- 3.144.85.184 ↩ ec2-3-144-85-184.us-east-2.compute.amazonaws.com
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
auth1.dns.cogentco.com dns.cogentco.com 2026030300 10800 3600 604800 600
Primary NS (mname)
auth1.dns.cogentco.com
Admin Email (rname)
dns@cogentco.com
Serial
2026030300
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
auth1.dns.cogentco.com
auth2.dns.cogentco.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.myconnectwise.net include:docebosaas.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=75; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 75% of failing messages only
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
7 records- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.myconnectwise.net include:docebosaas.com include:spf.protection.outlook.com ~all
- MS=ms22383696
- asv_domain=e6195682b28d2b3b09856a1fc1caf84b
- 4Sd9OCvE8d3c3zVsXq5uCqrDPlXOdh3UfUwZtLH6+Ak=
- 7o09d4qfvi7k0spev6bjbomb28
- aunt03bu8cul8ndjh2rdrfc980
- autodesk-domain-verification=O-6vgY28ARBrnQER0tAW
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