Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duelmen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 23:08:02 UTC · ↺ Refresh
MX Hostnames
- mail.duelmen.de
- mail02.duelmen.de
MX Priorities
- mail02.duelmen.de: 800
- mail.duelmen.de: 80
A / AAAA Records
- 167.235.36.223 ↩ dm01.rz.sicor-kdl.net
- 2a01:4f8:262:23c6::2 ↩ dm01.rz.sicor-kdl.net
Mail Server IPs
- 217.7.204.196 ↩ mail02.duelmen.de
- 130.255.124.150 ↩ mail.duelmen.de
SOA Record
Raw SOA
ns1.your-server.de postmaster.your-server.de 2026031701 86400 10800 3600000 3600
Primary NS (mname)
ns1.your-server.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026031701
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
ns1.your-server.de
ns3.second-ns.de
ns.second-ns.com
SPF Record
✓ Strict (-all)
v=spf1 mx a:cqux08.citeq.de a:cqux09.citeq.de a:mail.duelmen.de a:mail02.duelmen.de ip4:52.157.149.216 ip4:142.132.162.144 a:m01.duelmen.de ip4:130.255.124.131 include:spf.regioit.de -all
📊 DNS lookups: 7/10
✓ 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
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=4EF6F27BDD2B1C9F250BA41BC88E50E455489ED4
- apple-domain-verification=AY8tc2GVLw1RPo5f
- SPFv=spf1 mx a:cqux08.citeq.de a:cqux09.citeq.de a:mail.duelmen.de a:mail02.duelmen.de ip4:52.157.149.216 ip4:142.132.162.144 a:m01.duelmen.de ip4:130.255.124.131 include:spf.regioit.de -all
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