Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koelner.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 09:33:17 UTC · ↺ Refresh
MX Hostnames
- koelner-de.mail.protection.outlook.com
MX Priorities
- koelner-de.mail.protection.outlook.com: 10
A / AAAA Records
- 75.101.132.169 ↩ ec2-75-101-132-169.compute-1.amazonaws.com
Mail Server IPs
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
- 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
dns11.netcologne.de hostmaster.netcologne.de 2025110403 10800 3600 3600000 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2025110403
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
dns11.netcologne.de
dns12.netcologne.de
dns13.netcologne.de
dns14.netcologne.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:_spf_eucentral1.prod.hydra.sophos.com ip4:78.35.43.151 ip4:212.117.66.242 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
⚠ p=none — monitoring only, no enforcement
📋 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
2 records- sophos-domain-verification=ed50bb560c24451868da00fbf07bf47d3f8a30612d1f698171bced89ccb4e0f0
- SPFv=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:_spf_eucentral1.prod.hydra.sophos.com ip4:78.35.43.151 ip4:212.117.66.242 -all
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