buergerstiftung-duisburg.de

Valid Email Server
Domain Lookup › buergerstiftung-duisburg.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
buergerstiftung-duisburg.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-31 11:49:31 UTC · ↺ Refresh

MX Hostnames

  • buergerstiftungduisburg-de03i.mail.protection.outlook.com

MX Priorities

  • buergerstiftungduisburg-de03i.mail.protection.outlook.com: 10

A / AAAA Records

  • 81.169.145.156 ↩ w9c.rzone.de
  • 2a01:238:20a:202:1156:: ↩ w9c.rzone.de

Mail Server IPs

  • 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com

SOA Record

Raw SOA docks02.rzone.de hostmaster.strato-rz.de 2020052016 86400 7200 604800 300
Primary NS (mname)
docks02.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020052016
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks02.rzone.de
shades01.rzone.de

SPF Record

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

DMARC Record

✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

1 record
  • SPFv=spf1 include:spf.protection.outlook.com -all
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