fsw.tax

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
fsw.tax
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-24 01:33:26 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • maildomain.datevnet.de
  • maildomain.datevnet.com

MX Priorities

  • maildomain.datevnet.com: 20
  • maildomain.datevnet.de: 10

A / AAAA Records

  • 89.107.184.250 ↩ sa6.serverdomain.org

Mail Server IPs

  • 193.27.49.221 ↩ maildomain.datevnet.com
  • 193.27.49.207 ↩ maildomain.datevnet.com
  • 2a00:e50:f155:7::dd ↩ maildomain.datevnet.com
  • 2a00:e50:f155:7::cf ↩ maildomain.datevnet.com
  • 193.27.49.220 ↩ maildomain.datevnet.de
  • 193.27.49.206 ↩ maildomain.datevnet.de
  • 2a00:e50:f155:7::ce ↩ maildomain.datevnet.de
  • 2a00:e50:f155:7::dc ↩ maildomain.datevnet.de

SOA Record

Raw SOA ns4i.nshost2.de role.webhostone.de 2025111604 7200 540 604800 3600
Primary NS (mname)
ns4i.nshost2.de
Admin Email (rname)
role@webhostone.de
Serial
2025111604
Refresh
7200s
Retry
540s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns5i.nshost2.net
ns4i.nshost2.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.sendinblue.com include:spf.protection.outlook.com include:maildomain._spf.datev.de ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1;p=quarantine;rua=mailto:[email protected]!10m;ruf=mailto:[email protected]!10m;rf=afrf;pct=100;ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]!10m

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • SPFv=spf1 include:spf.sendinblue.com include:spf.protection.outlook.com include:maildomain._spf.datev.de ~all
  • include:spf.sendinblue.com
  • Sendinblue-code:d761058b1a6830fedaba4a3a574f66cb
  • 1password-site-verification=FSZ6Q6CXQ5ABFEDETTL5T3VJBU
  • MS=ms95915632
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 · Customize →
See demo & docs
Deep verification
Full email verification for fsw.tax

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

No credit card required
Get 1,000 Free Credits