rudolfs.de

Valid Email Server
Domain Lookup › rudolfs.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rudolfs.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 17:26:37 UTC · ↺ Refresh

MX Hostnames

  • rudolfs-de.i-v1.mx.microsoft
  • rudolfs-de.mail.protection.outlook.com

MX Priorities

  • rudolfs-de.mail.protection.outlook.com: 10
  • rudolfs-de.i-v1.mx.microsoft: 20

A / AAAA Records

  • 217.160.0.243
  • 2001:8d8:100f:f000::294

Mail Server IPs

  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.168.0
  • 52.101.170.2
  • 2a01:111:f403:ca2d::1
  • 2a01:111:f403:ca2d::2
  • 2a01:111:f403:ca2d::
  • 2a01:111:f403:ca27::

SOA Record

Raw SOA ns1062.ui-dns.biz hostmaster.kundenserver.de 2017061318 28800 7200 604800 300
Primary NS (mname)
ns1062.ui-dns.biz
Admin Email (rname)
hostmaster@kundenserver.de
Serial
2017061318
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1062.ui-dns.com
ns1062.ui-dns.org
ns1062.ui-dns.de
ns1062.ui-dns.biz

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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

3 records
  • dERqg2t4rQl2XNz6osQflm6NO5h8bm
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • MS=ms74530581
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 rudolfs.de

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

No credit card required
Get 1,000 Free Credits