Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cornelsen-schulverlage.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 14:20:18 UTC · ↺ Refresh
MX Hostnames
- cornelsenschulverlage-de02c.mail.protection.outlook.com
MX Priorities
- cornelsenschulverlage-de02c.mail.protection.outlook.com: 0
A / AAAA Records
- 3.68.153.217 ↩ ec2-3-68-153-217.eu-central-1.compute.amazonaws.com
- 63.177.153.195 ↩ ec2-63-177-153-195.eu-central-1.compute.amazonaws.com
- 3.76.184.87
Mail Server IPs
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-2042.awsdns-63.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-2042.awsdns-63.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-552.awsdns-05.net
ns-1358.awsdns-41.org
ns-177.awsdns-22.com
ns-2042.awsdns-63.co.uk
SPF Record
✓ Strict (-all)
v=spf1 mx mx:umantis.com mx:de.umantis.com ip4:194.39.190.75 include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
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
2 records- SPFv=spf1 mx mx:umantis.com mx:de.umantis.com ip4:194.39.190.75 include:spf.protection.outlook.com -all
- apple-domain-verification=JqcJ1HwfUSpNeavp
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