Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
feri-institut.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 19:55:39 UTC · ↺ Refresh
MX Hostnames
- feriinstitut-de01b.mail.protection.outlook.com
MX Priorities
- feriinstitut-de01b.mail.protection.outlook.com: 0
A / AAAA Records
- 51.116.145.36 (no PTR)
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0.lon.auth.colt.net dns-requests.colt.net 2024102303 43200 7200 1209600 86400
Primary NS (mname)
ns0.lon.auth.colt.net
Admin Email (rname)
dns-requests@colt.net
Serial
2024102303
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns0.lon.auth.colt.net
ns1.fra.auth.colt.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.mailjet.com include:spfa.myconvento.com ip4:217.110.32.128/25 ip4:89.246.175.32/27 ip4:20.52.205.110 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
6 records- ptdq6naqsdafrct7tk58g2nqnu
- d365mktkey=AGr80YfuOUDnHkmKQMOgKLRit2RcxEsZOHPM1zl77esx
- 57oud3c56n7l5gedgrkubudn5c
- SPFv=spf1 include:spf.mailjet.com include:spfa.myconvento.com ip4:217.110.32.128/25 ip4:89.246.175.32/27 ip4:20.52.205.110 include:spf.protection.outlook.com -all
- dbymqhb7lcg11x91rdyvx7yz0f4vnj0b
- MS=ms94870722
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