isr-school.de

Valid Email Server
Domain Lookup › isr-school.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
isr-school.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-09-04 18:54:43 UTC · ↺ Refresh

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MX Hostnames

  • isrschool-de0i.mail.protection.outlook.com

MX Priorities

  • isrschool-de0i.mail.protection.outlook.com: 0

A / AAAA Records

  • 185.175.196.64 (no PTR)
  • 2a00:1c98:60:1090::314d:e0e (no PTR)

Mail Server IPs

  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.91.162 ↩ mail-matpr04cu00302.inbound.protection.outlook.com
  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
  • 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::a ↩ mail-am7pr02cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca38::a ↩ mail-wa4pr05cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca48::c ↩ mail-miypr03cu00104.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.bdm.microsoftonline.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1.bdm.microsoftonline.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
ns1.bdm.microsoftonline.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:spf.schoolbox.cloud ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 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

4 records
  • mscid=vcHY1u6Q4wRLPHwva3jN1cfJVVBrkgWqm5BH9Onpz6DMypd/L44ft5EZpnJROwofM4K/b/7Sw0ls1ugi2L/4tQ==
  • linkedin-site-verification=8c69e263-6fad-4bb6-9523-4e2aeb8f562c
  • google-site-verification=s4cQUczyLj2o7IaJne1mfgGP7AqeApAnd8j-ZhhhvL4
  • SPFv=spf1 include:spf.protection.outlook.com include:spf.schoolbox.cloud ~all
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