Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
marencke.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 10:27:24 UTC · ↺ Refresh
MX Hostnames
- postlaube.de
MX Priorities
- postlaube.de: 10
A / AAAA Records
- 185.163.116.237 ↩ postlaube.de
Mail Server IPs
- 185.163.116.237 ↩ postlaube.de
SOA Record
Raw SOA
ns1.schnurrkrampf.de info.42do.com 2026022215 7200 3600 604800 10800
Primary NS (mname)
ns1.schnurrkrampf.de
Admin Email (rname)
info@42do.com
Serial
2026022215
Refresh
7200s
Retry
3600s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
ns1.schnurrkrampf.de
ns2.schnurrkrampf.de
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:185.163.116.237 ip4:5.9.139.107 ip4:188.68.62.37 ip6:2a03:4000:6:d104::1 ip6:2a03:4000:6:d104::42 a:ns1.schnurrkrampf.de +a:postlaube.de +a:securesmtprelay.t-online.de +a:customer-relay1.web-server.biz -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine; adkim=s; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
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
2 records- SPFv=spf1 a mx ip4:185.163.116.237 ip4:5.9.139.107 ip4:188.68.62.37 ip6:2a03:4000:6:d104::1 ip6:2a03:4000:6:d104::42 a:ns1.schnurrkrampf.de +a:postlaube.de +a:securesmtprelay.t-online.de +a:customer-relay1.web-server.biz -all
- google-site-verification=5zovTtAjDFGWm3a-0sChhrcqIJrdsvdQPOsDRESc8sI
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