Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grimme-institut.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 03:42:02 UTC · ↺ Refresh
MX Hostnames
- grimmeinstitut-de01e.mail.protection.outlook.com
MX Priorities
- grimmeinstitut-de01e.mail.protection.outlook.com: 10
A / AAAA Records
- 212.227.30.187 ↩ www10.grimme-institut.de
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
SOA Record
Raw SOA
nsa5.schlundtech.de richert.grimme-institut.de 2024110701 43200 7200 1209600 86400
Primary NS (mname)
nsa5.schlundtech.de
Admin Email (rname)
richert@grimme-institut.de
Serial
2024110701
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsd5.schlundtech.de
nsa5.schlundtech.de
nsb5.schlundtech.de
nsc5.schlundtech.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a:spf.grimme-institut.de include:spf.protection.outlook.com include:spf.crsend.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
4 records- facebook-domain-verification=w3y8en3dap1ubbgxowjegfk58rdmhc
- google-site-verification=8XHbsom3CAPTL5XfI0dn9JxXLSKejo7PW2bUq0a_jU4
- SPFv=spf1 a:spf.grimme-institut.de include:spf.protection.outlook.com include:spf.crsend.com ~all
- MS=ms13049409
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