theissen-rt.de

Valid Email Server
Domain Lookup › theissen-rt.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
theissen-rt.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 15:49:39 UTC · ↺ Refresh

MX Hostnames

  • theissenrt-de02b.mail.protection.outlook.com

MX Priorities

  • theissenrt-de02b.mail.protection.outlook.com: 1

A / AAAA Records

  • 77.75.252.115 ↩ cloud5-vm203.de-nserver.de

Mail Server IPs

  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.de-nserver.de hostmaster.ns1.de-nserver.de 2026031333 14400 3600 604800 600
Primary NS (mname)
ns1.de-nserver.de
Admin Email (rname)
hostmaster@ns1.de-nserver.de
Serial
2026031333
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1.de-nserver.de
ns2.de-nserver.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.emailsignatures365.com include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ 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
  • MS=ms84141452
  • v=spf2.0/pra mx ip4:87.253.162.0/24 ip4:31.47.240.0/20 ip4:91.203.108.0/22 ip4:212.48.119.192/27 include:secure-mailgate.com ip4:192.162.85.0/24 -all
  • SPFv=spf1 include:spf.emailsignatures365.com include:spf.protection.outlook.com -all
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