Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
kaestner-tools.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 07:14:14 UTC · ↺ Refresh
MX Hostnames
- kaestnertools-de02b.mail.protection.outlook.com
MX Priorities
- kaestnertools-de02b.mail.protection.outlook.com: 1
A / AAAA Records
- 148.251.16.254 ↩ gate64.pd081.proserver.punkt.de
- 2a01:4f8:241:1e27:a566:f81d:402b:b141 ↩ vpro0910.proserver.punkt.de
Mail Server IPs
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns55.domaincontrol.com dns.jomax.net 2026030505 28800 7200 604800 600
Primary NS (mname)
ns55.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026030505
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns56.domaincontrol.com
ns55.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:80.237.132.10 ip4:135.181.88.11 ip4:91.137.1.244/29 ip4:195.175.82.254/30 ip4:195.175.45.246/30 ip4:88.103.216.16/29 ip4:5.158.171.155/27 ip4:92.79.20.96/27 ip4:80.103.216.18 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 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
4 records- mh7b1leh6vp9er3ei6l4cb2m6c
- SPFv=spf1 a mx ip4:80.237.132.10 ip4:135.181.88.11 ip4:91.137.1.244/29 ip4:195.175.82.254/30 ip4:195.175.45.246/30 ip4:88.103.216.16/29 ip4:5.158.171.155/27 ip4:92.79.20.96/27 ip4:80.103.216.18 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
- dQv79A1T+RAoY0dmdafp3Suc+G1t0fV+K2vQsrlwE6K8JXZo1wD9dnHGyENaMjyDkjSvUgy9ZN7LH4CsUj0+MQ==
- MS=ms22981204
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