drk-duesseldorf.de

Valid Email Server
Domain Lookup › drk-duesseldorf.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
drk-duesseldorf.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 10:05:35 UTC · ↺ Refresh

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MX Hostnames

  • drkduesseldorf-de0i.m-v1.mx.microsoft

MX Priorities

  • drkduesseldorf-de0i.m-v1.mx.microsoft: 10

A / AAAA Records

  • 80.82.221.203 ↩ cms05.dml.dt-internet.de

Mail Server IPs

  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com

SOA Record

Raw SOA dns01.dt-internet.de dnsadmin.dt-internet.de 3771342786 10800 3600 604800 600
Primary NS (mname)
dns01.dt-internet.de
Admin Email (rname)
dnsadmin@dt-internet.de
Serial
3771342786
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

dns05.d-t-internet.de
dns01.dt-internet.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:213.23.214.74 ip4:195.50.132.37 ip4:128.127.70.100 ip4:185.232.0.139 ip4:149.232.252.34 ip4:149.232.252.35 ip4:149.232.252.36 ip4:80.158.28.98 a:drk-duesseldorf.d-velop.cloud a:drk-duesseldorf-test.d-velop.cloud a:mail.drk-duesseldorf.de mx:indivsurvey.de include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:spf.mailjet.com include:spf.ale-connect.com include:ihr-webspace.de -all
📊 DNS lookups: 9/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;sp=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;aspf=s;fo=1
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

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

2 records
  • google-site-verification=ZTzazytvCwpQvTdYdsNrFztfNon-6i32bub1G_Se8jQ
  • SPFv=spf1 ip4:213.23.214.74 ip4:195.50.132.37 ip4:128.127.70.100 ip4:185.232.0.139 ip4:149.232.252.34 ip4:149.232.252.35 ip4:149.232.252.36 ip4:80.158.28.98 a:drk-duesseldorf.d-velop.cloud a:drk-duesseldorf-test.d-velop.cloud a:mail.drk-duesseldorf.de mx:indivsurvey.de include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:spf.mailjet.com include:spf.ale-connect.com include:ihr-webspace.de -all
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