Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
esbstudentconsulting.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 23:33:14 UTC · ↺ Refresh
MX Hostnames
- esbstudentconsulting-de.mail.protection.outlook.com
MX Priorities
- esbstudentconsulting-de.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.66 ↩ 217-160-0-66.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::21d ↩ 2001-08d8-100f-f000-0000-0000-0000-021d.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:ca09::20 ↩ mail-as8pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1073.ui-dns.org hostmaster.1und1.com 2017060138 28800 7200 604800 600
Primary NS (mname)
ns1073.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060138
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1073.ui-dns.org
ns1034.ui-dns.com
ns1060.ui-dns.de
ns1065.ui-dns.biz
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- brevo-code:6b040bd5967bf98d266bb814ec67ce59
- SPFv=spf1 include:spf.protection.outlook.com -all
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