isolee.com

Valid Email Server
Domain Lookup › isolee.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
isolee.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-23 10:38:35 UTC · ↺ Refresh

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MX Hostnames

  • smtp.rzone.de

MX Priorities

  • smtp.rzone.de: 5

A / AAAA Records

  • 212.7.33.54 ↩ static.54.33.7.212.ibercom.com

Mail Server IPs

  • 81.169.145.98 ↩ smtp.rzone.de
  • 2a01:238:20a:202:50f0::2097 ↩ smtp.rzone.de

SOA Record

Raw SOA docks03.rzone.de hostmaster.strato-rz.de 2020052110 86400 7200 604800 300
Primary NS (mname)
docks03.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020052110
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks03.rzone.de
shades16.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.strato.com include:sendgrid.net include:mailgun.org -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No 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 include:spf.protection.outlook.com include:_spf.strato.com include:sendgrid.net include:mailgun.org -all
  • google-site-verification=uyTk-fttcS1_RjSJRtx39DkcsCGqrhP3CJwKxqdSsVI
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