Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jboss.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 10:17:23 UTC · ↺ Refresh
MX Hostnames
- mx1.redhat.com
- mx2.redhat.com
MX Priorities
- mx2.redhat.com: 20
- mx1.redhat.com: 10
A / AAAA Records
- 52.200.142.250 ↩ ec2-52-200-142-250.compute-1.amazonaws.com
- 2600:1f18:297:ba18:6ddc:5d8f:6053:f003 (no PTR)
- 2600:1f18:297:ba0e:7900:f622:48a8:f266 (no PTR)
- 2600:1f18:297:ba24:b508:76de:f4a:df34 (no PTR)
Mail Server IPs
- 52.25.184.255 ↩ ec2-52-25-184-255.us-west-2.compute.amazonaws.com
SOA Record
Raw SOA
dns1.p01.nsone.net hostmaster.nsone.net 1684376201 200 7200 1209600 3600
Primary NS (mname)
dns1.p01.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1684376201
Refresh
200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns1.p02.nsone.net
dns2.p02.nsone.net
dns1.p01.nsone.net
dns2.p01.nsone.net
dns3.p01.nsone.net
dns4.p01.nsone.net
SPF Record
✗ Invalid
v=spf1 -all
📊 DNS lookups: 0/10
⚠ Strict -all with no allowed senders — no servers can send email for this domain.
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; sp=none; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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- SPFv=spf1 -all
- 32e02337dff94daabd114d073765b592
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