Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mariastern.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 18:37:52 UTC · ↺ Refresh
MX Hostnames
- mx00.kundenserver.de
- mariastern-de.mail.protection.outlook.com
- mx01.kundenserver.de
MX Priorities
- mariastern-de.mail.protection.outlook.com: 10
- mx00.kundenserver.de: 100
- mx01.kundenserver.de: 100
A / AAAA Records
- 217.160.0.79
- 2001:8d8:100f:f000::22e
Mail Server IPs
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 212.227.15.41 ↩ mx00.kundenserver.de
- 217.72.192.67 ↩ mx01.kundenserver.de
SOA Record
Raw SOA
ns1110.ui-dns.org hostmaster.1and1.com 2018041809 28800 7200 604800 300
Primary NS (mname)
ns1110.ui-dns.org
Admin Email (rname)
hostmaster@1and1.com
Serial
2018041809
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1070.ui-dns.com
ns1099.ui-dns.biz
ns1110.ui-dns.org
ns1034.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 a mx mx:schulwerk.online include:spf.protection.outlook.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];sp=reject;adkim=s;aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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- google-site-verification=DL9MRxGNidMWm-xU8GGHVn7q1YrLetb3Fvv5zb82SXE
- MS=ms84127770
- apple-domain-verification=x5U3oPK4SN33Lhob
- SPFv=spf1 a mx mx:schulwerk.online include:spf.protection.outlook.com -all
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