Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cylex.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-27 09:37:26 UTC · ↺ Refresh
MX Hostnames
- newsletter.cylex.de
- newsletter2.mycylex.de
MX Priorities
- newsletter.cylex.de: 10
- newsletter2.mycylex.de: 20
A / AAAA Records
- 104.18.17.132 (no PTR)
- 104.18.16.132 (no PTR)
- 2606:4700::6812:1084 (no PTR)
- 2606:4700::6812:1184 (no PTR)
Mail Server IPs
- 82.207.175.35 ↩ newsletter.cylex.de
- 82.207.175.139 ↩ newsletter2.mycylex.de
SOA Record
Raw SOA
merlin.ns.cloudflare.com dns.cloudflare.com 2400060376 10000 2400 604800 1800
Primary NS (mname)
merlin.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400060376
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
merlin.ns.cloudflare.com
serena.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 a ip4:82.207.172.0/24 ip4:82.207.173.0/24 ip4:82.207.174.0/24 ip4:82.207.175.0/24 ip4:94.130.171.12/32 ip4:62.217.61.160/27 ip4:85.17.145.79/32 ip4:213.69.255.221/32 mx include:spf.smtp2go.com include:spf.mandrillapp.com include:sendgrid.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a ip4:82.207.172.0/24 ip4:82.207.173.0/24 ip4:82.207.174.0/24 ip4:82.207.175.0/24 ip4:94.130.171.12/32 ip4:62.217.61.160/27 ip4:85.17.145.79/32 ip4:213.69.255.221/32 mx include:spf.smtp2go.com include:spf.mandrillapp.com include:sendgrid.net -all
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