Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
e1-holding.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 19:33:28 UTC · ↺ Refresh
MX Hostnames
- smtpin.rzone.de
MX Priorities
- smtpin.rzone.de: 5
A / AAAA Records
- 172.67.71.226 (no PTR)
- 104.26.2.211 (no PTR)
- 104.26.3.211 (no PTR)
- 2606:4700:20::681a:2d3 (no PTR)
- 2606:4700:20::681a:3d3 (no PTR)
- 2606:4700:20::ac43:47e2 (no PTR)
Mail Server IPs
- 81.169.145.97 ↩ smtpin.rzone.de
- 2a01:238:20a:202:50f0::1097 ↩ smtpin.rzone.de
SOA Record
Raw SOA
dayana.ns.cloudflare.com dns.cloudflare.com 2396970650 10000 2400 604800 1800
Primary NS (mname)
dayana.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396970650
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
stan.ns.cloudflare.com
dayana.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.sendinblue.com ip4:81.169.146.128/25 ip4:85.215.255.0/24 ip6:2a01:238:20a:202::0/64 ip6:2a01:238:400::0/48 ip4:81.169.144.153 ip6:2a01:238:20a:202:50ff::153 mx include:spf.mandrillapp.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none; rua=mailto:[email protected]!10m; ruf=mailto:[email protected]!10m; rf=afrf; pct=100; ri=86400
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]!10m
↳ Subdomain policy: none
DKIM Selectors
✓ 1 found
mail._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
5 records- Sendinblue-code:f7b525478a968c9abb65bf5ec27e3183
- ca3-a45231a683fd4f768e263ec35cce21b8
- google-site-verification=F921CzDyn1D06J3ujN7UDXs6sgJj-3eRtEnI5yPamuo
- mandrill_verify.d88GktQ-ZLC74cmkYYEdMw
- SPFv=spf1 include:spf.sendinblue.com ip4:81.169.146.128/25 ip4:85.215.255.0/24 ip6:2a01:238:20a:202::0/64 ip6:2a01:238:400::0/48 ip4:81.169.144.153 ip6:2a01:238:20a:202:50ff::153 mx include:spf.mandrillapp.com ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for e1-holding.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
Get 1,000 Free Credits