Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
imap-institut.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 20:33:18 UTC · ↺ Refresh
MX Hostnames
- imapinstitut-de01b.mail.protection.outlook.com
MX Priorities
- imapinstitut-de01b.mail.protection.outlook.com: 10
A / AAAA Records
- 3.127.206.0 ↩ ec2-3-127-206-0.eu-central-1.compute.amazonaws.com
- 2a05:d014:1089:3a00:7f37:e4f:7f59:f909 (no PTR)
Mail Server IPs
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca04::2 ↩ mail-du2pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
shades08.rzone.de hostmaster.strato-rz.de 2020050852 86400 7200 604800 300
Primary NS (mname)
shades08.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020050852
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
shades08.rzone.de
docks04.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.mailjet.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; adkim=s; aspf=s; sp=reject; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ 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- SPFv=spf1 include:spf.protection.outlook.com include:spf.mailjet.com -all
- google-site-verification=NaFdIfM-U3FU_0N9nEOp2CJ9AjYXNxNHhIF5KnHw4SY
- brevo-code:3fb75c8c84e6dd3a26791de816f1ca38
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