Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
iubh-dualesstudium.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 03:49:09 UTC · ↺ Refresh
MX Hostnames
- iubhdualesstudium-de01b.mail.protection.outlook.com
MX Priorities
- iubhdualesstudium-de01b.mail.protection.outlook.com: 10
A / AAAA Records
- 89.106.200.1 ↩ edge.redirect.pizza
Mail Server IPs
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-928.awsdns-52.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-928.awsdns-52.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-928.awsdns-52.net
ns-1321.awsdns-37.org
ns-1712.awsdns-22.co.uk
ns-18.awsdns-02.com
SPF Record
✓ Strict (-all)
v=spf1 include:8f6fp39stf.powerspf.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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
10 records- google-site-verification=Msh0oz2aA33G5oAFgojdOHFfaxNVGmGeJnt4kNWOt_k
- mentimeter-b28fb257-715e-43e8-aa62-163db6c270cd
- miro-verification=031ae4ecd740c7c8c61799a2cac546f7138ab8b5
- SPFv=spf1 include:8f6fp39stf.powerspf.com -all
- MS=ms59356519
- ZOOM_verify_YD1CLsLaQ3uUTHtL63iGlw
- adobe-idp-site-verification=49851c8e79998fd28508668bd86fa6dc1aec495f94f5c01a9343f99bc7ecfd8a
- apple-domain-verification=xt5oHoEkQojUWpEu
- atlassian-domain-verification=oOrPD2E/a8eYQwziujWTttLi87l974TWeTeYErbquXs1aQOQSGPvuT3GzCZFbflH
- facebook-domain-verification=tre4wrq1317vtkiesj0f7214tghzy6
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