Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hellerau-gb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 21:01:22 UTC · ↺ Refresh
MX Hostnames
- helleraugb-de02b.mail.protection.outlook.com
MX Priorities
- helleraugb-de02b.mail.protection.outlook.com: 10
A / AAAA Records
- 81.201.148.51 ↩ ws01.dsinet.de
- 2a00:8180:1100::4 ↩ ws01.dsinet.de
Mail Server IPs
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
dns01.dsinet.de hostmaster.dsi.net 2025110402 7200 540 604800 3600
Primary NS (mname)
dns01.dsinet.de
Admin Email (rname)
hostmaster@dsi.net
Serial
2025110402
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.dsinet.eu
ns2.dsinet.de
ns.dsinet.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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 include:spf.protection.outlook.com -all
- MS=ms43632553
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