Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koch-ag.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 22:58:36 UTC · ↺ Refresh
MX Hostnames
- kochag-de01b.mail.protection.outlook.com
MX Priorities
- kochag-de01b.mail.protection.outlook.com: 10
A / AAAA Records
- 81.169.145.72 ↩ w08.rzone.de
- 2a01:238:20a:202:1072:: ↩ w08.rzone.de
Mail Server IPs
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.68.36 ↩ mail-db5pr02cu00104.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
- 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
SOA Record
Raw SOA
shades19.rzone.de hostmaster.strato-rz.de 2021030208 86400 7200 604800 300
Primary NS (mname)
shades19.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2021030208
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks19.rzone.de
shades19.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.strold.io a mx ip4:217.6.77.122 ip4:212.58.64.0/21 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.0.0/16 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
1 record- SPFv=spf1 include:spf.strold.io a mx ip4:217.6.77.122 ip4:212.58.64.0/21 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.0.0/16 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
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