au.de

Valid Email Server
Domain Lookup › au.de

Domain Overview

DNS: ✓ 11d ago Checker: ✓ 11d ago
au.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-07-27 16:59:15 UTC · ↺ Refresh

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MX Hostnames

  • au-de.mail.protection.outlook.com

MX Priorities

  • au-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 24.40.164.249 (no PTR)

Mail Server IPs

  • 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com

SOA Record

Raw SOA ns6.cmo.de sommer.cmo.de 2026072001 10800 1800 1209600 180
Primary NS (mname)
ns6.cmo.de
Admin Email (rname)
sommer@cmo.de
Serial
2026072001
Refresh
10800s
Retry
1800s
Expire
1209600s
Minimum TTL
180s

Nameservers (NS)

ns6.cmo.de

SPF Record

✓ Strict (-all)
v=spf1 a mx a:mx01.rexx-systems.de ip4:178.15.128.194/27 ip4:87.193.206.88/29 ip4:24.40.164.240/28 include:_spf.rexx-suite.com include:spf.sendinblue.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

9 records
  • teamviewer-sso-verification=11b184774f9a4e66bc7673fd23342bc4
  • _5uo4lw6m01yfj9kg746oi7qyrt1p1ht
  • apple-domain-verification=qVi1Tf5gr6Zbp0Dg
  • SPFv=spf1 a mx a:mx01.rexx-systems.de ip4:178.15.128.194/27 ip4:87.193.206.88/29 ip4:24.40.164.240/28 include:_spf.rexx-suite.com include:spf.sendinblue.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com -all
  • d365mktkey=y22u3rB1xCXNtYLOWsiio1y4BQ2ykQlF3HCLTt86x4Ax
  • google-site-verification=HFa1Ze16LegnHFhqmj7wiKzoz3BvDVKPVCO9ETNespM
  • d365mktkey=eHBjLMZwsl8SuhRcTbNr1rxajIF4HjgNhXPx1ouJXZ0x
  • Sendinblue-code:c68900d227baec1f9117aca8b0a7bfda
  • google-site-verification=a0wIAEp5sTz8_Tko-iKa1vDFeOSQV_vAcwEfgJjxVyQ
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