iws-institut.de

Valid Email Server
Domain Lookup › iws-institut.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
iws-institut.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 12:59:54 UTC · ↺ Refresh

MX Hostnames

  • mx.steuerlehrgaenge.com

MX Priorities

  • mx.steuerlehrgaenge.com: 10

A / AAAA Records

  • 78.46.78.135 ↩ cloud.steuerlehrgaenge.de
  • 2a01:4f8:120:3463::2 ↩ cloud.steuerlehrgaenge.de

Mail Server IPs

  • 5.9.194.115 ↩ mx.steuerlehrgaenge.com

SOA Record

Raw SOA ns13.domaincontrol.com dns.jomax.net 2025010203 28800 7200 604800 600
Primary NS (mname)
ns13.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025010203
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns14.domaincontrol.com
ns13.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:5.9.194.114 ip4:5.9.194.115 ip4:5.9.194.116 ip4:136.243.67.169 ip4:78.46.78.135 ip6:2a01:4f8:212:21a1::2 ip6:2a01:4f8:120:3463::2 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

3 records
  • SPFv=spf1 a mx ip4:5.9.194.114 ip4:5.9.194.115 ip4:5.9.194.116 ip4:136.243.67.169 ip4:78.46.78.135 ip6:2a01:4f8:212:21a1::2 ip6:2a01:4f8:120:3463::2 -all
  • google-site-verification=dv-MruUhc61v2j2ckL9oxOp61QtUwWbhVZyQ6BN3RHI
  • google-site-verification=338Hsb4jdkbl_FXjuZoSZpYawKzrczAUg48I2kIwOv0
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 iws-institut.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits