Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cosag.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 13:52:46 UTC · ↺ Refresh
MX Hostnames
- x2.api.de
MX Priorities
- x2.api.de: 10
A / AAAA Records
- 84.44.160.26 ↩ shop3.fuman.de
Mail Server IPs
- 84.44.160.200 ↩ x2.api.de
SOA Record
Raw SOA
nsa4.schlundtech.de merten.continue.de 2025052201 43200 7200 1209600 600
Primary NS (mname)
nsa4.schlundtech.de
Admin Email (rname)
merten@continue.de
Serial
2025052201
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
600s
Nameservers (NS)
nsd4.schlundtech.de
nsb4.schlundtech.de
nsa4.schlundtech.de
nsc4.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 a:x1.api.de a:x2.api.de a:mail3.fuman.de a:smtp1.continue.de a:smtp2.continue.de a:mail.plantin.de -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
1 record- SPFv=spf1 a:x1.api.de a:x2.api.de a:mail3.fuman.de a:smtp1.continue.de a:smtp2.continue.de a:mail.plantin.de -all
Full email verification for cosag.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits