Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rubenstein.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 21:45:58 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 76.76.21.21 (no PTR)
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
pdns05.domaincontrol.com dns.jomax.net 2026031100 28800 7200 604800 600
Primary NS (mname)
pdns05.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031100
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
pdns06.domaincontrol.com
pdns05.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:38.96.184.34 ip4:67.225.229.47 ip4:159.135.226.58 ip4:192.254.121.248 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:_spf.psm.knowbe4.com include:servers.mcsv.net -all
📊 DNS lookups: 4/10
✓ 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: 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
8 records- SPFv=spf1 ip4:38.96.184.34 ip4:67.225.229.47 ip4:159.135.226.58 ip4:192.254.121.248 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:_spf.psm.knowbe4.com include:servers.mcsv.net -all
- openai-domain-verification=dv-UTCLAr4F7Eipdo6jpisbCmxu
- google-site-verification=s0oS8wGVWNu_mRgkjNvCnPyTnC435EiSJa7B6YNjPAA
- cisco-ci-domain-verification=5fecc889d0b0595bcd74bade6b04650ff18118748f0926f5d25bf1ec41061607
- slack-domain-verification=vJoUqJVuyBwBENLvups5a6Jqy97ENMrBQ4gSaDER
- SLaohf/GCNBKFbHQFPk1vlxEDpx552SuHGfwp5MKPoshJVU/eLBVG1NUwUHililgiQGqnose5yjBjP5gbINjDw==
- google-site-verification=VAq7XdQyqWq3N7bcpYWj-6mD6KxF0KOOfzCNkdOmKbw
- apple-domain-verification=4Q744iNGfqdibd2t
Full email verification for rubenstein.com
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