Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
hs-osnabrueck.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 08:32:28 UTC · ↺ Refresh
MX Hostnames
- hsosnabrueck-de0e.mail.protection.outlook.com
MX Priorities
- hsosnabrueck-de0e.mail.protection.outlook.com: 10
A / AAAA Records
- 131.173.251.19 ↩ hs-osnabrueck.de
- 2001:638:513:fb0::83ad:fb13 ↩ hs-osnabrueck.de
Mail Server IPs
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
dns-1.serv.uni-osnabrueck.de dnsadmin.uni-osnabrueck.de 767896907 3602 1802 1209600 1202
Primary NS (mname)
dns-1.serv.uni-osnabrueck.de
Admin Email (rname)
dnsadmin@uni-osnabrueck.de
Serial
767896907
Refresh
3602s
Retry
1802s
Expire
1209600s
Minimum TTL
1202s
Nameservers (NS)
dns-2.serv.uni-osnabrueck.de
dns-1.serv.uni-osnabrueck.de
dns-3.serv.uni-osnabrueck.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:131.173.88.6 ip4:131.173.88.34 ip4:131.173.251.2 ip4:131.173.251.148 ip4:131.173.251.149 ip6:2001:638:513:fb0::83ad:fb02 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; aspf=s; adkim=s; fo=1:d:s; ri=86400;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· 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
7 records- google-site-verification=_RzzZU_Qaq0ao_D0jWYKMIvLJ63yiNAFduK5JsUhT3U
- MS=ms60437418
- SPFv=spf1 ip4:131.173.88.6 ip4:131.173.88.34 ip4:131.173.251.2 ip4:131.173.251.148 ip4:131.173.251.149 ip6:2001:638:513:fb0::83ad:fb02 include:spf.protection.outlook.com -all
- adobe-idp-site-verification=786c43513455297e51539e31a24713930d6dc193f3514f26ccf76d7a3b2a307d
- jamf-site-verification=MY3UkPOuW42vhqIdOrW1Kg
- apple-domain-verification=HwbapoUOsbTicjLx
- HARICA-Cxs65tncXhyG6eFLaGt
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