a-t.de

Valid Email Server
Domain Lookup › a-t.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
a-t.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-03 22:58:01 UTC · ↺ Refresh

MX Hostnames

  • at-de0c.mail.protection.outlook.com

MX Priorities

  • at-de0c.mail.protection.outlook.com: 5

A / AAAA Records

  • 116.202.217.175 ↩ web06.leoserver.de
  • 2a01:4f8:241:5190::85 (no PTR)

Mail Server IPs

  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.leoskulldns.de rechnung.a-t.de 1774222125 10800 3600 604800 10800
Primary NS (mname)
ns1.leoskulldns.de
Admin Email (rname)
rechnung@a-t.de
Serial
1774222125
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
10800s

Nameservers (NS)

ns1.leoskulldns.de
ns3.leoskulldns.de
ns5.leoskulldns.de
ns4.leoskulldns.de
ns2.leoskulldns.de

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx a:host01.a-t.de include:spf.protection.outlook.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
default._domainkey
✓ 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
  • SPFv=spf1 a mx a:host01.a-t.de include:spf.protection.outlook.com ~all
  • MS=ms45962595
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