onsite-gmbh.de

Valid Email Server
Domain Lookup › onsite-gmbh.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
onsite-gmbh.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 11:18:36 UTC · ↺ Refresh

MX Hostnames

  • onsitegmbh-de01e.mail.protection.outlook.com

MX Priorities

  • onsitegmbh-de01e.mail.protection.outlook.com: 10

A / AAAA Records

  • 217.160.29.138 (no PTR)

Mail Server IPs

  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns1027.ui-dns.org hostmaster.1und1.de 2017042820 28800 7200 604800 300
Primary NS (mname)
ns1027.ui-dns.org
Admin Email (rname)
hostmaster@1und1.de
Serial
2017042820
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1027.ui-dns.org
ns1027.ui-dns.de
ns1027.ui-dns.biz
ns1027.ui-dns.com

SPF Record

✓ Strict (-all)
v=spf1 a:mailrelay.netways.de include:spf.protection.outlook.com include:_spf.kundenserver.de -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict 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

3 records
  • google-site-verification=EPjCc8ADAZWjMDApF_wydUgtVgqONBVnez1joNaIaPs
  • google-site-verification=7IT2N1GRvdxNTagCqSpuWdC0y8c9qEh6_oB3SSYB6wc
  • SPFv=spf1 a:mailrelay.netways.de include:spf.protection.outlook.com include:_spf.kundenserver.de -all
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