Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mikrooek.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 16:34:52 UTC · ↺ Refresh
MX Hostnames
- asgw-symbio.symbio.de
- mail.symbiopharm.de
- mx1.symbio.de
MX Priorities
- mail.symbiopharm.de: 30
- asgw-symbio.symbio.de: 10
- mx1.symbio.de: 20
A / AAAA Records
- 80.146.248.174 (no PTR)
Mail Server IPs
- 217.6.69.114 ↩ mail.symbiopharm.de
- 195.145.150.98 ↩ mx1.symbio.de
SOA Record
Raw SOA
nsa0.schlundtech.de do-not-reply.mikrooek.de 2025030601 43200 7200 1209600 86400
Primary NS (mname)
nsa0.schlundtech.de
Admin Email (rname)
do-not-reply@mikrooek.de
Serial
2025030601
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsa0.schlundtech.de
nsb0.schlundtech.de
nsc0.schlundtech.de
nsd0.schlundtech.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.crsend.com a mx ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate 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
2 records- MS=ms20517848
- SPFv=spf1 include:spf.crsend.com a mx ~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 mikrooek.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits