Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ctag.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 14:01:31 UTC · ↺ Refresh
MX Hostnames
- mail.ctag.de
MX Priorities
- mail.ctag.de: 0
A / AAAA Records
- 136.243.148.171 ↩ mail.ctag.de
- 2a01:4f8:171:172a::2 ↩ mail.ctag.de
Mail Server IPs
- 136.243.148.171 ↩ mail.ctag.de
- 2a01:4f8:171:172a::2 ↩ mail.ctag.de
SOA Record
Raw SOA
ns3.domainoffensive.net info.domains.resellerinterface.de 1773878400 10800 3600 604800 120
Primary NS (mname)
ns3.domainoffensive.net
Admin Email (rname)
info@domains.resellerinterface.de
Serial
1773878400
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
120s
Nameservers (NS)
ns1.domainoffensive.de
ns2.domainoffensive.eu
ns3.domainoffensive.net
SPF Record
✓ Soft Fail (~all)
v=spf1 mx mx:mail.ctag.de mx:mail.kapellen.onl mx:mail.grossmann.onl ip4:136.243.148.171 ip6:2a01:4f8:171:172a::2 ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; ruf=mailto:[email protected]; fo=0; adkim=r; aspf=r; pct=100; rf=afrf; sp=none
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx mx:mail.ctag.de mx:mail.kapellen.onl mx:mail.grossmann.onl ip4:136.243.148.171 ip6:2a01:4f8:171:172a::2 ~all
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