Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
k2-systems.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 06:29:11 UTC · ↺ Refresh
MX Hostnames
- k2systems-de0e.mail.protection.outlook.com
MX Priorities
- k2systems-de0e.mail.protection.outlook.com: 10
A / AAAA Records
- 188.138.112.6 ↩ hosting1.361.de
Mail Server IPs
- 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.68.29 ↩ mail-dbapr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
SOA Record
Raw SOA
dns.dns1.de hostmaster.partnergate.com 2026030901 28800 7200 604800 86400
Primary NS (mname)
dns.dns1.de
Admin Email (rname)
hostmaster@partnergate.com
Serial
2026030901
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
dns.dns4.de
dns.dns3.de
dns.dns2.de
dns.dns1.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:217.224.129.192 ip4:212.184.167.102 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.cmail.ondemand.com include:email.hivebrite.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
7 records- autodesk-domain-verification=fLnfJ5PWpRM6qJJzUysl
- atlassian-domain-verification=2djORmgVfo1VYbc1Jc0/DqwwXPug9lLuRsF3jPAD5GkseLUwp7vCuZgxWux1nqaN
- SPFv=spf1 ip4:217.224.129.192 ip4:212.184.167.102 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.cmail.ondemand.com include:email.hivebrite.com -all
- MS=A78F9D9147D7878C40D93E085DD51227440BF704
- teamviewer-sso-verification=4d6bccce9c854e23b290ea91aa02fd82
- apple-domain-verification=JLAv8sANRlRLKx9Z
- protonmail-verification=d65f67aafbdc74e07e186d63f6e8679baf99dbed
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