Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
institut-fresenius.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 10:06:01 UTC · ↺ Refresh
MX Hostnames
- institutfresenius-de02b.mail.protection.outlook.com
MX Priorities
- institutfresenius-de02b.mail.protection.outlook.com: 0
A / AAAA Records
- 85.13.153.95 ↩ dd36604.kasserver.com
Mail Server IPs
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.dnshost.net zonemaster\@dnshost.net 1749552558 43200 3600 604800 3600
Primary NS (mname)
ns1.dnshost.net
Admin Email (rname)
zonemaster\@dnshost@net
Serial
1749552558
Refresh
43200s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.dnshost.net
ns2.dnshost.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; fo=1; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],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
3 records- google-site-verification=MWa9szD1AnmAUbzVvJzWF64QI4-fWyoV80djfIVLAiM
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=CsHjKNC8hrZpO_8gM-svq-4-C89IxHSUvF8zGuVmB_A
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