reederei-frisia.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
reederei-frisia.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 16:32:17 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • reedereifrisia-de02b.mail.protection.outlook.com

MX Priorities

  • reedereifrisia-de02b.mail.protection.outlook.com: 10

A / AAAA Records

  • 109.239.203.244 (no PTR)

Mail Server IPs

  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com

SOA Record

Raw SOA docks12.rzone.de hostmaster.strato-rz.de 2020051024 86400 7200 604800 300
Primary NS (mname)
docks12.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051024
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

shades18.rzone.de
docks12.rzone.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:109.239.202.176/29 ip4:109.239.202.96/28 include:spf.protection.outlook.com include:mail.zendesk.com include:spf.mail.omg.de include:spf.brevo.com include:spf.reederei-frisia-de.cloud.nospamproxy.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

4 records
  • brevo-code:4bb85444d3a3586c50248710d0b4673f
  • kvWFswxrrt09VPeMb1rXhrMGSeF5jfMJ6bSWUegFwInKE4nWh/kPcz2dETu4mQ5KTbCyLhwRxGgc1nqyoShLUA==
  • SPFv=spf1 ip4:109.239.202.176/29 ip4:109.239.202.96/28 include:spf.protection.outlook.com include:mail.zendesk.com include:spf.mail.omg.de include:spf.brevo.com include:spf.reederei-frisia-de.cloud.nospamproxy.com -all
  • IQDApRXzZIlfu9gstanCZftwjjNTd+Hnxx2V5AlaJqk=
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for reederei-frisia.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits