Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
expertarum.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 22:49:43 UTC · ↺ Refresh
MX Hostnames
- mxext3.mailbox.org
- mxext1.mailbox.org
- mxext2.mailbox.org
MX Priorities
- mxext3.mailbox.org: 10
- mxext1.mailbox.org: 10
- mxext2.mailbox.org: 10
A / AAAA Records
- 18.238.55.80 ↩ server-18-238-55-80.jfk52.r.cloudfront.net
- 18.238.55.37 ↩ server-18-238-55-37.jfk52.r.cloudfront.net
- 18.238.55.69 ↩ server-18-238-55-69.jfk52.r.cloudfront.net
- 18.238.55.115 ↩ server-18-238-55-115.jfk52.r.cloudfront.net
Mail Server IPs
- 80.241.60.216 ↩ mx3.mailbox.org
- 2001:67c:2050:104::3:25:1 ↩ mx3.mailbox.org
- 80.241.60.212 ↩ mx1.mailbox.org
- 2001:67c:2050:104::1:25:1 ↩ mx1.mailbox.org
- 80.241.60.215 ↩ mx2.mailbox.org
- 2001:67c:2050:104::2:25:1 ↩ mx2.mailbox.org
SOA Record
Raw SOA
ns-1416.awsdns-49.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1416.awsdns-49.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-606.awsdns-11.net
ns-130.awsdns-16.com
ns-1416.awsdns-49.org
ns-1597.awsdns-07.co.uk
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mailbox.org include:servers.mcsv.net include:spf.mailjet.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
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:mailbox.org include:servers.mcsv.net include:spf.mailjet.com ~all
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