rtc-treuhand.de

Valid Email Server
Domain Lookup › rtc-treuhand.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rtc-treuhand.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-22 06:28:38 UTC · ↺ Refresh

MX Hostnames

  • rtctreuhand-de0i.mail.protection.outlook.com

MX Priorities

  • rtctreuhand-de0i.mail.protection.outlook.com: 0

A / AAAA Records

  • 85.13.165.32 ↩ dd49206.kasserver.com

Mail Server IPs

  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA ns5.kasserver.com hostmaster.kasserver.com 2511021124 28800 7200 1209600 7200
Primary NS (mname)
ns5.kasserver.com
Admin Email (rname)
hostmaster@kasserver.com
Serial
2511021124
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
7200s

Nameservers (NS)

ns3.kas-dns-server.de
a-dns-service.de
ns5.kasserver.com
ns6.kasserver.com

SPF Record

✓ Soft Fail (~all)
v=spf1 mx a:smtp-out.mycomp-pro.com include:spf.crsend.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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 mx a:smtp-out.mycomp-pro.com include:spf.crsend.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com ~all
  • MS=CD020FF92628DE73C63DEFE569B08FDD197F8552
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
See demo & docs
Deep verification
Full email verification for rtc-treuhand.de

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

Get 1,000 Free Credits