Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hs-heilbronn.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 16:32:36 UTC · ↺ Refresh
MX Hostnames
- hsheilbronn-de0e.mail.protection.outlook.com
MX Priorities
- hsheilbronn-de0e.mail.protection.outlook.com: 10
A / AAAA Records
- 141.7.96.82 (no PTR)
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
SOA Record
Raw SOA
pmdns.rz.hs-heilbronn.de hostmaster.hs-heilbronn.de 2026040102 10800 1800 3600000 86400
Primary NS (mname)
pmdns.rz.hs-heilbronn.de
Admin Email (rname)
hostmaster@hs-heilbronn.de
Serial
2026040102
Refresh
10800s
Retry
1800s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
dns5.belwue.de
pmdns.rz.hs-heilbronn.de
dns1.belwue.de
dns3.belwue.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:141.7.97.34 ip4:217.30.49.101 ip4:217.30.49.102 ip4:217.30.49.103 ip4:217.30.49.104 ip4:217.146.24.49 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
10 records- miro-verification=c24ad48d3112d171af19a673c8ca014d1c012cf9
- cisco-ci-domain-verification=671030617d1e5485f0daba397688a1e9989d39dba8c0f25d54ba737eb26773af
- apple-domain-verification=hXqLdwlDCDV9JqPw
- rk5c7ljusy
- MS=BA2253D7E1150B9EBE811EFCA29701DD1B0F5378
- SPFv=spf1 ip4:141.7.97.34 ip4:217.30.49.101 ip4:217.30.49.102 ip4:217.30.49.103 ip4:217.30.49.104 ip4:217.146.24.49 include:spf.protection.outlook.com -all
- MS=ms76974483
- amazonses:tX35oYkolw2vWlWWbieTep2Vr40qoW05phlm0BznNKg=
- adobe-idp-site-verification=350aac411190f86007dcf02dbe54268cbaef8a38dd27bbc4845385da3c81675f
- atlassian-domain-verification=mHkAqj7xIwY5oCDOxnrmnQO4MOO87vAanIcpGGXmZ6nqDpOpTesQTylMptfPxxfL
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