Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
concat.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 14:38:20 UTC · ↺ Refresh
MX Hostnames
- mail.concat.de
- mail2.concat.de
MX Priorities
- mail2.concat.de: 20
- mail.concat.de: 10
A / AAAA Records
- 157.97.110.105 ↩ cust-host-1.ccc-concat.de
Mail Server IPs
- 149.233.1.170 ↩ mail2.concat.de
- 195.226.200.36 ↩ mail.concat.de
SOA Record
Raw SOA
ns1.nodesecure.com do-not-reply.concat.de 2026034835 43200 7200 1209600 86400
Primary NS (mname)
ns1.nodesecure.com
Admin Email (rname)
do-not-reply@concat.de
Serial
2026034835
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns1.nodesecure.com
ns2.nodesecure.de
SPF Record
✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:_spf.qualtrics.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
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
13 records- SPFv=spf1 mx include:spf.protection.outlook.com include:_spf.qualtrics.com -all
- kZgIyP3B0vOvyaxx8nWX9NlYMc0glkNdoKYzZMMAXZPwxE9g+XgbBKwDW7a9425ar8ueXwUs0HAk+O9SCJ4uTg==
- QuoVadis=09679467-514f-453f-9da0-836a743dec5e
- have-i-been-pwned-verification=69ba482022b2ab73dc170d54f0900dae
- _globalsign-domain-verification=df77L61ATQr3o2OToWGn9jAjfiau0oIQmRTwjTI_za
- 2n1ydUw42xtLnTOyfxxr+6KdX8v8yaK+6jZR2j+KhnlSrGmorA7yu6wymFgfo7icI0hAuJSgCHD1wuNlJzk9Og==
- teamviewer-sso-verification=836e3a4dfe7942eaa6df457e771ce508
- google-site-verification=QHhQO8hszGq7weXr3CDYsjTykiKlPGtPCc6QhDtXWGA
- apple-domain-verification=WZWRTOEFuXOwtRE6
- docusign=fb6fc7b6-603d-4521-a350-640a7b3da47b
- MS=ms71485726
- openai-domain-verification=dv-KA0m0s4RahSSkJqPfzoKmM6M
- Q6NUi73YVIQIuQZioxLJcWdhBfmEResE1wyFKIrhRhA=
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