sub-immobilien.de

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
sub-immobilien.de
Yes
โœ“ Yes
Unknown
No
No
โš  Yes
No
No

Checked via [email protected] ยท 2026-03-24 14:23:52 UTC ยท โ†บ Refresh

MX Hostnames

  • mx3.onoffice.de
  • mx2.onoffice.de
  • mx1.onoffice.de

MX Priorities

  • mx2.onoffice.de: 10
  • mx3.onoffice.de: 20
  • mx1.onoffice.de: 10

A / AAAA Records

  • 178.16.57.121 โ†ฉ r28230.agenturserver.it

Mail Server IPs

  • 95.130.253.71 โ†ฉ mx2.onoffice.de
  • 95.130.253.56 โ†ฉ mx3.onoffice.de
  • 95.130.253.60 โ†ฉ mx1.onoffice.de

SOA Record

Raw SOA ns1.nodesecure.com do-not-reply.sub-immobilien.de 2025063333 43200 7200 1209600 86400
Primary NS (mname)
ns1.nodesecure.com
Admin Email (rname)
do-not-reply@sub-immobilien.de
Serial
2025063333
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns2.nodesecure.de
ns1.nodesecure.com

SPF Record

โœ“ Soft Fail (~all)
v=spf1 include:_spf.onoffice.de ~all
๐Ÿ“Š DNS lookups: 1/10
~ Soft fail (~all) โ€” moderate enforcement

DMARC Record

โœ“ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100; ri=86400;
โœ“ Reject โ€” strongest protection
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]
โ†ณ Subdomain policy: reject

DKIM Selectors

โœ— None detected

No DKIM records found for common selectors โ€” 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

3 records
  • SPFv=spf1 include:_spf.onoffice.de ~all
  • atlassian-domain-verification=Ek1x9HsaHQcawoNQ1OLhEWdpPMJFu0mxEEsaAaHzsa8R8annTBdw1atyfiq2PbsB
  • atlassian-sending-domain-verification=20928528-3aa2-41e6-8f99-db7b20aca70a
Free ยท No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts โ€” unlimited, forever free.

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

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

No credit card required
Get 1,000 Free Credits