Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bfw-dueren.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 15:24:50 UTC · ↺ Refresh
MX Hostnames
- esg3.bfw-dueren.de
MX Priorities
- esg3.bfw-dueren.de: 10
A / AAAA Records
- 185.175.196.74 (no PTR)
- 2a00:1c98:60:1101::94b1:421 (no PTR)
Mail Server IPs
- 212.16.245.192 ↩ esg3.bfw-dueren.de
SOA Record
Raw SOA
dns11.netcologne.de hostmaster.netcologne.de 2026031601 28800 7200 604800 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2026031601
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns11.netcologne.de
dns13.netcologne.de
dns12.netcologne.de
dns14.netcologne.de
SPF Record
✓ Strict (-all)
v=spf1 a:esg3.bfw-dueren.de a:mail.bfw-dueren.de ip4:157.90.236.191 ip4:195.201.251.115 ip4:212.16.245.192 ip4:212.16.242.154 ip4:213.168.79.43 ip4:213.168.79.42 include:spf.protection.outlook.com -all
📊 DNS lookups: 3/10
✓ 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
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- swisssign-check=rsKdhV_nrc198CqyUcCZomLD7Q4
- SPFv=spf1 a:esg3.bfw-dueren.de a:mail.bfw-dueren.de ip4:157.90.236.191 ip4:195.201.251.115 ip4:212.16.245.192 ip4:212.16.242.154 ip4:213.168.79.43 ip4:213.168.79.42 include:spf.protection.outlook.com -all
- MS=ms52375584
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